Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: How old was Mike Ockrent when the musical was transferred to the Adelphi Theatre? Passage:The musical was revived in 1941, 1945 and 1949 on the West End. Lupino Lane starred and directed each of these productions, with choreography by Fred Leslie. In 1984, a revised production opened at the Leicester Haymarket Theatre with a revised script by Stephen Fry and contributions by director Mike Ockrent. It transferred to the Adelphi Theatre on 12 February 1985 and closed on 16 January 1993 after an eight-year run and 3,303 performances. It starred Robert Lindsay as Bill Snibson, Emma Thompson and Frank Thornton. The production won two Olivier Awards: Musical of the Year and Outstanding Performance by an Actor in a Musical (Robert Lindsay). Cast changes included Enn Reitel as Bill and Su Pollard as Sally in 1986; Gary Wilmot as Bill and Jessica Martin as Sally in 1989. Thornton was succeeded by Nicholas Smith. The production subsequently toured throughout Britain.


b