question:  Hum Tum stars which Indian film actor and producer born on August 16, 1970?
answer: Saif Ali Khan
context: Title: Hum Tum
  Passage: Hum Tum (translation: "Me and You") is a 2004 Indian romantic comedy film directed by Kunal Kohli and produced by Aditya Chopra and Yash Chopra under their Yash Raj Films banner.  The movie stars Saif Ali Khan and Rani Mukerji in the lead roles.
  Title: Mashaal Durrani
  Passage: Mashaal Durrani (born Jan 11, 1993) is an Indian actor, who works in Bollywood.  Mashaal is the son of the most popular writer of Bollywood Iqbal Durrani.  He started his filmy career as an actor with the Bollywood movie Hum Tum Dushman Dushman in which he played the lead role .  The movie was a critically acclaimed and got profits at Box Office.
  Title: Kathaa Animations
  Passage: Kathaa Animations, is an Indian Animation Studio, aimed at developing original content for the Indian as well as Global audiences.  It is best known for the creation of the Animated Characters Hum Tum for the film Hum Tum.  Hum Tum was one of the most successful animated characters to be used in mainstream Bollywood film. 
  Title: Mohit Sehgal
  Passage: Mohit Sehgal is an Indian television actor.  He is best known for his role of Samrat Shergil in the Indian television series, "Miley Jab Hum Tum" on STAR One.  He then bagged the role of Siddharth in "Mujhse Kuch Kethi Yeh Khamoshiyaan" on Star Plus in 2012 and in 2013 as Haider in "Qubool Hai" and 2015 as Somendra in Sarojini on Zee TV.  Mohit has also participated in "Nach Baliye Season 8" with Sanaya in 2017 and they made it to the Finale.  Mohit is currently seen as Ayaan Mehta in Love Ka Hai Intezaar on Star Plus.
  Title: Suraiya
  Passage: Suraiya Jamaal Sheikh (15 June 1929 – 31 January 2004), popularly known as Suraiya, was an Indian Muslim Hindi/Hindustani film actress and playback singer in Bollywood from the 1940s to the early 1960s, who remained unmarried throughout her life, after her love affair with actor Dev Anand was aborted by her maternal grandmother.  She was the most popular singing star of the Indian sub-continent of her generation.  Until 1943, as a child singer, Suraiya did playback singing for one actress, namely Mehtab, in three films, and also in some of her own films for her roles as a child artiste.  After this, she only sang for her own films as an actress, and acted as a heroine from 1946 until the end of her career in 1963.  From 1948 to 1951, she became the singing superstar of Bollywood, earning more for her performances than all the performing actors of the times, male or female, including Dev Anand, Raj Kapoor, Dilip Kumar, Nargis and Madhubala.  She received 1.5–2 lakhs rupees for her role per film, when top male actors were getting 50 thousand to 1 lakh rs.  For a song, she commanded rs. 1000, while Lata Mangeshkar was getting rs. 100–200 per song.  She was the only child of her parents.  She had a natural talent for singing, acting and dancing from childhood.  She received basic training in music when her mother used to take her to a Hindustani music teacher or 'masterji' for training.  She first sang for a children's program for All India Radio in 1937.  Later on Naushad gave her on the job 'training', while recording.  She went on to become one of the most successful singing film stars of Bollywood.  She had received training in dancing from Mumtaz Ali, dancer-actor and father of the famous comedian Mehmood.  She was also known for her North Indian Muslim feudal style acting or 'adakari' in many of her films ("Mirza Ghalib (film)", "Phool", "Afsar", "Shayar", "Jeet (1949 film)", "Anmol Ghadi" and "Dastan").  This style 'endowed modernity with an aura of tradition' and brought nostalgic feudal tinge to the scenes.  Her performance 'expertly integrated gestures, music and speech'.  Suraiya in her heyday was known as 'Malika-e-Husn' (queen of beauty), 'Malika-e-Tarannum' (queen of melody) and 'Malika-e-Adakaari' (queen of acting), all rolled into one.  In a career spanning from 1936 till 1963, Suraiya sang 338 songs in films (which were mostly her own films) and 2 in addition were non-film songs, namely, 'tum rahe kahan ko piya' and 'hum tum karenge pyar'.  She acted in 67 movies, which do not include the incomplete films such as "Jaanwar" (with Dilip Kumar), "Paagal Khaana" with Bharat Bhushan and an Indo-British film on Wajid Ali Shah (1953) being directed by British director, Herbert Marshall, with Ashok Kumar in the role of Wajid Ali Shah.
  Title: Ta Ra Rum Pum
  Passage: Ta Ra Rum Pum is a 2007 Indian Hindi sports-drama film that stars Saif Ali Khan and Rani Mukerji in the lead roles.  This is the second time the lead pair worked together after the success of their last film, "Hum Tum" (2004).  It was directed by Siddharth Anand, who directed 2005's "Salaam Namaste" (Also starring Khan), and also wrote Hum Tum.  A small amount of the plot can be compared loosely with that of Will Ferrell's "" and Tony Scott's "Days of Thunder".  The film was a hit at the box office in India and was one of the highest grossing films of 2007.  "Ta Ra Rum Pum" marks the final commercial success in a romance film of Rani Mukerji, who was the highest paid actress in Bollywood during the 2000s.
  Title: Kunal Kohli
  Passage: Kunal Kohli is an Indian film director, producer and writer known for his works predominantly in Bollywood.  He is best known as the director of "Hum Tum" (2004) and "Fanaa" (2006).  He also owns the production house Kunal Kohli Productions, and produced "Thoda Pyaar Thoda Magic" (2008).
  Title: Phir Se...
  Passage: Phir Se (English: "Once Again") is an upcoming Indian romance film, directed by Kunal Kohli and Ajay Bhuyan.  The film stars Kunal Kohli, Jennifer Winget and Sumona Chakravarti.  Rajit Kapoor, Dalip Tahil, Kanwaljeet Singh and Sushmita Mukherjee are in supporting roles.  This is the first film of director Kunal Kohli as an actor and also the debut film of Jennifer Winget.  The tagline of the film is "I'm not 40—I'm 18 with 22 years experience."  The trailer was released on 7 April 2015.  Prior to "Phir Se", Kohli had directed "Fanaa", "Hum Tum", "Mujhse Dosti Karoge! " and "Teri Meri Kahaani".
  Title: Saif Ali Khan
  Passage: Saif Ali Khan (] ; born Sajid Ali Khan on 16 August 1970) is an Indian film actor and producer.  The son of actress Sharmila Tagore and the late cricketer Mansoor Ali Khan Pataudi, Khan made his acting debut in Yash Chopra's unsuccessful drama "Parampara" (1993), but achieved success with his roles in the romantic drama "Yeh Dillagi" and the action film "Main Khiladi Tu Anari" (both 1994).  Khan's career prospect declined through much of the 1990s, and his biggest commercial success of the decade came with the ensemble drama "Hum Saath-Saath Hain" (1999).  He rose to prominence with roles in two ensemble comedy-dramas"Dil Chahta Hai" (2001) and "Kal Ho Naa Ho" (2003).
  Title: Avhiroop Mazzumdar
  Passage: Avhiroop Mazzumdar, born Abhiroop Dutta Mazumdar is an Indian television and film director who was associated with popular television shows like Miley Jab Hum Tum, Sangam, Kyunki Saas Bhi Kabhi Bahu Thi, Kasturi, and many others popular Indian TV soaps.  He has also directed Delhi Diary, a documentary on 100 years of New Delhi which was released by Chief Minister Sheila Dikshit.  He has made several other documentaries and films, including Astitva, Sabr, Sambhav.  Sabr won Best Jury and Best Non-Fiction Award at the National Film and Video Festival (Student Edition).  He also received La Fémis Scholarship, Paris in 2007.  Avhiroop's short film, Cognition was felicitated at BYOFF and Inscreen (Orissa).
citations: Hum Tum Saif Ali Khan