Definition: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Positive Example 1 -
Input: Who was the first American President?
Output: president of the united states

Positive Example 2 -
Input: The Dutch duo of Ray Slijngaard and Anita Dels, who had 8 top ten hits in the 90s, were better known by what name?
Output: anita doth

Negative Example 1 -
Input: Anna Smashnova played which sport professionally until 2007?
Output: sport

Negative Example 2 -
Input: Rob Davis, Les Gray, Dave Mount and Ray Stiles are members of which pop group?
Output: david

Now complete the following example -
Input: What film, sub-titled The Story of Christy Brown, is a 1989 drama directed by Jim Sheridan and starring Daniel Day-Lewis, Ray McAnally, Brenda Fricker, Fiona Shaw, Julie Hale, Alison Whelan, Kirsten Sheridan, Declan Croghan, Eanna MacLiam, Marie Conmee and Cyril Cusack, that tells the true story of an Irishman born with cerebral palsy?

Output: jim sheridan, daniel day-lewis, kirsten sheridan, cyril cusack, ray mcanally, fiona shaw, brenda fricker