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

Context : Robert Sadin is an American jazz musician, conductor, arranger, composer and producer. 
Question : What was Robert Sadin's career?
jazz musician

Context : The Prince of Headwaiters is a 1927 American silent drama film directed by John Francis Dillon. 
Question : Who id the director for The Prince of Headwaiters?
John Francis Dillon

Context : Voice from the Grave, also known as From the Files of Unsolved Mysteries: 
Question : Which is the basis of Voice from the Grave?

Unsolved Mysteries