question: What fashion house has Stefano Pilati worked at and is one of the biggest one global producers of fine fabrics (2.3 million metres per year)?
answer: Ermenegildo Zegna
context: Title: Nili Patera dune field
  Passage: Nili Patera is a dune field on Mars.  It is located on top of a lava bed, at the site of an ancient volcano, the Nili Patera caldera of Syrtis Major, near the Martian equator, and it is one of the most active dune fields of Mars.  Its location coordinates on Mars are 8.7° N latitude, 67.3° E longitude.  It is being actively studied by the HiRISE camera, onboard the Mars Reconnaissance Orbiter, at the rate of one image every six weeks.  The study of the movement of the dunes provides information regarding wind variation as a function of time and furthers the study of surface erosion characteristics of the Martian landscape.  This information can then be used for the development and design of future Mars expeditions.  The dunes of the Patera field are of the barchan type and their study by HiRISE was the first one to establish dune and ripple movement of a minimum of 1 m on Mars.  The Patera dune field, was also the first to be investigated using the COSI-Corr software, which was originally developed to analyse the movement of earthbound dunes.  The research results from the evidence provided by the monitoring of the Nili Patera field, indicate sand fluxes of the order of several cubic metres per metre per year, similar to the flux observed at the sand dunes of Victoria Valley in Antarctica.
  Title: Ibrahimiya Canal
  Passage: The Ibrahimiyah Canal is an irrigation canal in Egypt built in 1873.  It was the most important public work executed under the then newly established Ministry of Public Works.  It was built during the reign of Ismail Pasha when he was Khedive of Egypt.  It was commissioned by Bahgat Pasha, minister of public works, who designed it primarily to provide perennial irrigation to the Khedivial sugar estates in Middle Egypt.  It supplied perennial irrigation to 580000 acre and flood irrigation to another 420000 acre .  The discharge of the canal varied between 30 and 80 cubic metres per second in summer and between 500 and 900 cubic metres per second in flood.  Having its head on the left bank of the Nile, in Assiut, it runs northwards for 60 kilometres and then divides in Dairut into two main branches; one branch is the Bahr Yussef Canal, while the other is the Ibrahimiyah Canal proper.
  Title: Ronda Carman
  Passage: Ronda Rice Carman (born April 20, 1970) is an American writer and founder of All the Best: A Passport to Stylish Living, Designers at Home: Personal Reflections on Stylish Living and Ronda Carman Fine Fabrics.  All the Best was named as one of ten top design blogs in 2010 Fox News Carman is also a contributing writer for "New York Social Diary" and the "Huffington Post".  Carman's first book Designers At Home: Personal Reflections on Stylish Living is published by Rizzoli and was named by Amazon Best Interior Design Book for 2013.  In early 2014 Ronda started her own luxury fabric line Ronda Carman Fine Fabrics - Made in Scotland.
  Title: Ermenegildo Zegna
  Passage: Ermenegildo Zegna (] ) (often abbreviated and known simply as Zegna) is an Italian luxury fashion house that makes men's clothing and accessories.  Founded in 1910 when Ermenegildo bought his father's textile looms, it is now managed by the fourth generation of the Zegna family and remains in family ownership.  As well as producing men's suits for its own labels, it also manufactures suits for Gucci, Yves Saint Laurent, Dunhill and Tom Ford.  As one of the biggest global producers of fine fabrics (2.3 million metres per year), Zegna has been active in promoting improvements in wool production around the world.  Zegna is the largest menswear brand in the world by revenue.  Alessandro Sartori oversees creative direction for all departments of the brand.
  Title: Icefall
  Passage: Perhaps the most conspicuous consequence of glacier flow, icefalls occur where the glacier bed steepens and/or narrows.  Most glacier ice flows at speeds of a few hundred metres per year or less.  However, the flow of ice in an icefall may be measured in kilometres per year.  Such rapid flow cannot be accommodated by plastic deformation of the ice.  Instead, the ice fractures forming crevasses. Intersecting fractures form ice columns or seracs.  These processes are imperceptible for the most part; however, a serac may collapse or topple abruptly and without warning.  This behavior often poses the biggest risk to mountaineers climbing in an icefall.
  Title: Stefano Pilati
  Passage: Stefano Pilati (born 1965 in Milan) is an Italian fashion designer.  From 2004 until 2012, he was the head designer of the fashion house Yves Saint Laurent.  In late 2012 he left and became head of design at Ermenegildo Zegna, where he is responsible for the Italian house's couture collections, a role that he held until February 2016.  In tandem with that position, he also headed Zegna's Agnona brand (women's apparel) until July 2015.
citations: Stefano Pilati Ermenegildo Zegna