Question: On which semi-autobiographical film is based the 2009 romantic musical drama, which features an ensemble cast including the English actress who made her debut with the Old Vic Company?

Context paragraphs:
Maxine Audley: Maxine Audley (29 April 1923 – 23 July 1992) was an English theatre and film actress.  She made her professional stage debut in July 1940 at the Open Air Theatre.  During her career, Audley performed with both the Old Vic company and the Royal Shakespeare Company multiple times.  She appeared in more than 20 films, the first of which was the 1948 adaptation of "Anna Karenina".

Bristol Old Vic: Bristol Old Vic is a British theatre company based at the Theatre Royal, Bristol.  The present company was established in 1946 as an offshoot of the Old Vic in London.  It is associated with the Bristol Old Vic Theatre School, which became a financially independent organisation in the 1990s.  Bristol Old Vic runs a popular, and highly successful Young Company for young people aged 7–25.

Frank Petley: Frank Petley (sometimes credited as Frank B. or Frank E. Petley) (28 March 1872, Charlton, London –12 January 1945, Buxton, Derbyshire) was a British actor prominent in the Edwardian theatre and silent era cinema.  During the Second World War he performed with The Old Vic Company then based at the Liverpool Playhouse, appearing as Nat Miller in "Ah, Wilderness! " by Eugene O'Neill in a production by Noel Willman.

Esme Church: Esme Church (10 February 1893 – 31 May 1972) was a British actress and theatre director.  In a long career she acted with the Old Vic Company, the Royal Shakespeare Company and on Broadway.  She directed plays for the Old Vic, became head of the Old Vic Theatre School and then director of the Bradford Civic Playhouse, with its associated Northern Theatre School.

Judi Dench: Dame Judith Olivia "Judi" Dench, {'1': ", '2': ", '3': ", '4': "} (born 9 December 1934) is an English actress and author.  Dench made her professional debut in 1957 with the Old Vic Company.  Over the following few years, she performed in several of Shakespeare's plays in such roles as Ophelia in "Hamlet", Juliet in "Romeo and Juliet", and Lady Macbeth in "Macbeth".  Although most of her work during this period was in theatre, she also branched into film work and won a BAFTA Award as Most Promising Newcomer.  She drew strong reviews for her leading role in the musical "Cabaret" in 1968.

Judi Dench filmography: Dame Judi Dench is an English actress who has worked in theater, television, and film.  Dench made her professional debut in 1957 with the Old Vic Company.  Over the following few years she played in several of Shakespeare's plays in such roles as Ophelia in "Hamlet", Juliet in "Romeo and Juliet" and Lady Macbeth in "Macbeth".  She branched into film work, and won a BAFTA Award as Most Promising Newcomer; however, most of her work during this period was in theatre.

Nine (2009 live-action film): Nine is a 2009 romantic musical drama film directed and produced by Rob Marshall and written by Michael Tolkin and Anthony Minghella.  The film is an adaptation of the 1982 musical of the same name, which in turn is based on Federico Fellini's semi-autobiographical 1963 film "8½".  In addition to songs from the stage musical, all written by Maury Yeston, the film has three original songs, also written by Yeston.  The ensemble principal cast consists of Daniel Day-Lewis, Marion Cotillard, Penélope Cruz, Judi Dench, Fergie, Kate Hudson, Nicole Kidman, and Sophia Loren.

Prospect Theatre Company: The Prospect Theatre Company was an English company founded, as Prospect Productions, in 1961.  Based at the Arts Theatre, Cambridge from 1964 until 1969, the company, with Toby Robertson as artistic director and Richard Cottrell as associate director, toured both nationally and internationally with a mainly classical repertoire, providing notable appearances of such actors as Ian McKellen and Timothy West.  The company became closely associated with the Edinburgh Festival after its first appearance there in 1967.  Separating from the Arts Theatre in 1969, the company, renamed The Prospect Theatre Company, survived without a permanent base for the next eight years under the direction of Toby Robertson, mounting productions in which Derek Jacobi and Dorothy Tutin made significant appearances.  Eventually the company found a new home at London's Old Vic in 1977: two years later it became the Old Vic Theatre Company.  Though noted for its exemplary ensemble playing, the company lost its Arts Council of Great Britain funding in 1980 after Timothy West's first season as Robertson's successor, leading to Prospect's demise.

The Padlock: The Padlock is a two-act 'afterpiece' opera by Charles Dibdin.  The text was by Isaac Bickerstaffe.  It debuted in 1768 at the Drury Lane Theatre in London as a companion piece to "The Earl of Warwick".  It partnered other plays before a run of six performances in tandem with "The Fatal Discovery" by John Home.  "The Padlock" was a success, largely due to Dibdin's portrayal of Mungo, a blackface caricature of a black servant from the West Indies.  The company took the production to the United States the next year, where a portrayal by Lewis Hallam, Jr. as Mungo met with even greater accolades.  The libretto was first published in London in 1768 (?)  and in Dublin in 1775.  The play remained in regular circulation in the U.S. as late as 1843.  It was revived by the Old Vic Company in London and on tour in the UK in 1979 in a new orchestration by Don Fraser and played in a double-bill with Garrick's "Miss In Her Teens".  The role of Mungo was, again, played by a white actor.  Opera Theatre of Chicago have recently revived the piece (2007?)  where, it would seem, the role of Mungo was changed to that of an Irish servant.

Gerald Harper: Gerald Harper (born 15 February 1929) is an English actor, best known for his work on television, having played the title roles in "Adam Adamant Lives! " (1966–67) and "Hadleigh" (1969–76).  He then returned to his main love, the theatre.  His classical work includes playing on Broadway with the Old Vic company, playing Iago at the Bristol Old Vic and Benedick at the Chichester Festival Theatre.  Other plays in London included "Crucifer of Blood" at the Haymarket Theatre, "House Guest", "A Personal Affair", "Suddenly at Home" and "Baggage".  He has directed many plays, amongst them a production of "Blithe Spirit" in Hebrew at the Israeli National Theatre.

Supporting paragraphs: Nine (2009 live-action film) Judi Dench
Answer: 8½