Question:  Brief Encounter has a libretto based on which English composer and actor's "Still Life"?

Context paragraphs:
Still Life (2006 film): Still Life () is a 2006 Chinese film directed by Jia Zhangke.  Shot in the old village of Fengjie, a small town on the Yangtze River which is slowly being destroyed by the building of the Three Gorges Dam, "Still Life" tells the story of two people in search of their spouses.  "Still Life" is a co-production between the Shanghai Film Studio and Xstream Pictures.

Brief Encounter (opera): Brief Encounter is an opera in two acts by composer André Previn.  The English libretto by John Caird is based on Noël Coward's play "Still Life" and Coward's screenplay for the 1945 David Lean film "Brief Encounter".  Commissioned by the Houston Grand Opera, the opera premiered on May 1, 2009 in Houston, Texas at the Wortham Theater Center.

Still Life in Motion: Still Life in Motion is a remix album by trance DJ BT, released in November, 2001.  It was released in the United Kingdom only.  It contains various remixes from BT's third studio album, "Movement in Still Life".  It also contains four unmixed B-sides, released on the United States version of "Movement in Still Life" only.

Brief Encounter (1974 film): Brief Encounter is a 1974 British-Italian television film starring Richard Burton and Sophia Loren, adapted from the play "Still Life" by Noël Coward.  The plot of the film is about two strangers, both married to others, who meet in a railway station and find themselves in a brief but intense affair.  The material was previously the basis for the David Lean film "Brief Encounter" (1945).  Burton was cast at the last moment, after Robert Shaw dropped out.

Turn Me On (BT EP): The Turn Me On EP is an extended play, released by trance DJ BT, during his "Movement in Still Life" era, released in 1999.  The EP contains three remixes total, of two different songs from BT's album "Movement in Still Life", "Mercury and Solace" and "Godspeed" both of which would later be released individually as singles.  "Mercury and Solace" features vocals by Jan Johnston, and "Godspeed" is arguably BT's most recognized track from "Movement in Still Life".

Noël Coward: Sir Noël Peirce Coward (16 December 189926 March 1973) was an English playwright, composer, director, actor and singer, known for his wit, flamboyance, and what "Time" magazine called "a sense of personal style, a combination of cheek and chic, pose and poise".

Still Life (video game): Still Life is a 2005 adventure game by Microïds.  "Still Life" is a sequel to "Post Mortem".  A sequel, "Still Life 2", was released in 2009.  The game has since sold 240,000 copies worldwide.

Extended Movement: Extended Movement is a promotional extended play, released by trance DJ BT during his "Movement in Still Life" era.  It was released only at college campuses in the United States, prior to the release of "Movement in Still Life".  It contains two unmixed songs, "The Hip Hop Phenomenon" and "Fibonacci Sequence", which could not be found on the U.S. release of "Movement in Still Life" (The latter could not be found on the U.K. version either).  It also contains remixes of three songs off of "Movement in Still Life": "Never Gonna Come Back Down", "Mercury and Solace" and "Godspeed".  Every normal, unmixed song on this extended play were eventually released individually as singles themselves.

Jan Pauwel Gillemans the Younger: Jan Pauwel Gillemans the Younger (Antwerp, baptized 3 September 1651 - Antwerp, buried 20 March 1704) was a Flemish still life painter.  He worked in a range of still life genres including flower and fruit still lifes, banquet still lifes, pronkstillevens and hunting pieces.  He collaborated with figure painters to create landscapes which combined a mythological or allegorical scene with a still life.  He worked and lived in Antwerp, Middelburg, London and Amsterdam.

Celia Johnson: Dame Celia Elizabeth Johnson DBE (18 December 1908 – 26 April 1982) was an English actress, known for her roles in the films "In Which We Serve" (1942), "This Happy Breed" (1944), "Brief Encounter" (1945) and "The Captain's Paradise" (1953).  For "Brief Encounter", she was nominated for the Academy Award for Best Actress.  A six-time BAFTA Award nominee, she won the BAFTA Award for Best Actress in a Supporting Role for "The Prime of Miss Jean Brodie" (1969).

Supporting paragraphs: Brief Encounter (opera) Noël Coward
Answer: Sir Noël Peirce Coward