Generate a correct and concise answer for the question based on the words in the context.

Ex Input:
Context : Casey's Shadow is a 1978 drama Metrocolor film directed by Martin Ritt and starring Walter Matthau.
Question : Who are the cast members of Casey's Shadow?

Ex Output:
Walter Matthau

Ex Input:
Context : 89 Aquarii (abbreviated 89 Aqr) is a binary star system in the equatorial constellation of Aquarius.
Question : The star 89 Aquarii is a part of the constellation named what?

Ex Output:
Aquarius

Ex Input:
Context : In 2013, Rick Shapiro was diagnosed with Parkinson's disease.
Question : Which medical condition afflicts Rick Shapiro?

Ex Output:
Parkinson's disease