question: Are Acis and Galatea by Handel, and Mussorgsky's Boris Godunov, both operatic works?
answer: yes
context: Title: Fyodor Petrovich Komissarzhevsky
  Passage: Fyodor Petrovich Komissarzhevsky (Russian: Фёдор Петро́вич Комиссарже́вский ) (1832 – 14 March 1905) was a Russian opera singer and teacher of voice and stagecraft.  A leading tenor at the Mariinsky Theatre in St. Petersburg, he created many roles in Russian operas, including the Pretender in Mussorgsky's "Boris Godunov" and the title role in Tchaikovsky's "Vakula the Smith".  He had a voice described in the "Grove Book of Opera Singers" as small but with a "velvety timbre" and as a singer was known for not only for his clear diction and beautiful phrasing but also for his skill as an actor.  He was the father of the actress Vera Komissarzhevskaya and the director Theodore Komisarjevsky.
  Title: Boris Godunov (1986 film)
  Passage: Boris Godunov (Russian: Борис Годунов ) is a 1986 drama film directed by and starring Sergei Bondarchuk.  It is an adaptation of the play "Boris Godunov", written by Alexander Pushkin.  The picture was co-produced by the Soviet Union, Poland, Czechoslovakia, and West Germany.  It was entered into the 1986 Cannes Film Festival.
  Title: Boris Godunov (1989 film)
  Passage: Boris Godounov (aka Boris Godunov) is a 1989 film based on the opera of the same name by Modest Mussorgsky, but also the play of Alexander Pushkin.
  Title: Ferruccio Furlanetto
  Passage: Ferruccio Furlanetto (born 16 May 1949 in Sacile, Italy) is an Italian bass.  His professional debut was in 1974 in Lonigo, he debuted at the Teatro alla Scala in Milan in 1979, in a production of Verdi's "Macbeth", conducted by Claudio Abbado.  He has gone on to sing numerous roles, including both Don Giovanni and Leporello in Mozart's "Don Giovanni", Philip II in Verdi's "Don Carlos", Figaro in Mozart's "Le nozze di Figaro", Gremin in Tchaikovsky's "Eugene Onegin", Zaccaria in Verdi's "Nabucco", Méphistophélès in Gounod's "Faust", Orestes in Strauss' "Elektra", Fiesco in Verdi's "Simon Boccanegra", the title role of Mussorgsky's "Boris Godunov", as well as many other roles.
  Title: Acis and Galatea (Handel)
  Passage: Acis and Galatea (HWV 49) is a musical work by George Frideric Handel with an English text by John Gay.  The work has been variously described as a serenata, a masque, a pastoral or pastoral opera, a "little opera" (in a letter by the composer while it was being written), an entertainment and in the New Grove Dictionary of Music an oratorio.  The work was originally devised as a one-act masque which premiered in 1718.
  Title: Julian Konstantinov
  Passage: Julian Konstantinov (Bulgarian: Юлиян Константинов) (also Yuliyan Konstantinov) (born 1966) is a Bulgarian operatic bass particularly known for his interpretations of the works of Wolfgang Amadeus Mozart, Giuseppe Verdi, and the bel canto roles of Rossini and Donizetti.  More recently he has become associated with the title role in Modest Mussorgsky's "Boris Godunov", a role he has sung in numerous opera houses.
  Title: Boris Godunov (1954 film)
  Passage: Boris Godunov (Russian: Борис Годунов ) is a 1954 Soviet drama film directed by Vera Stroyeva, based on the opera of the same name by Modest Mussorgsky.  It was screened out of competition at the 1987 Cannes Film Festival.
  Title: Boris Godunov (play)
  Passage: Boris Godunov (Russian: Борис Годунов , Borís Godunóv; variant title: "Драматическая повесть, Комедия o настоящей беде Московскому государству, o царе Борисе и о Гришке Отрепьеве", "A Dramatic Tale, The Comedy of the Distress of the Muscovite State, of Tsar Boris, and of Grishka Otrepyev") is a closet play by Alexander Pushkin.  It was written in 1825, published in 1831, but not approved for performance by the censor until 1866.  Its subject is the Russian ruler Boris Godunov, who reigned as Tsar from 1598 to 1605.  It consists of 25 scenes and is written predominantly in blank verse.
  Title: Boris Godunov (opera)
  Passage: Boris Godunov (Russian: Борис Годунов , "Borís Godunóv") is an opera by Modest Mussorgsky (1839–1881).  The work was composed between 1868 and 1873 in Saint Petersburg, Russia.  It is Mussorgsky's only completed opera and is considered his masterpiece.  Its subjects are the Russian ruler Boris Godunov, who reigned as Tsar (1598 to 1605) during the Time of Troubles, and his nemesis, the False Dmitriy (reigned 1605 to 1606).  The Russian-language libretto was written by the composer, and is based on the drama "Boris Godunov" by Aleksandr Pushkin, and, in the Revised Version of 1872, on Nikolay Karamzin's "History of the Russian State".
  Title: Acis and Galatea (mythology)
  Passage: The story of the love of Acis and the sea-nymph Galatea appears in Ovid's "Metamorphoses".  There the jealous Cyclops Polyphemus, who also loves Galatea, comes upon them embracing and crushes his rival with a boulder.  His destructive passion comes to nothing when Galatea changes Acis into a river spirit as immortal as herself.  The episode was made the subject of poems, operas, paintings and statues in the Renaissance and after.
citations: Boris Godunov (opera) Acis and Galatea (Handel)