TASK DEFINITION: In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
PROBLEM: Context: Essex skippers' other foods include creeping soft grass Link Information: none Answer: none

SOLUTION: Of the grasses that the essex skipper eats, which is the longest?

PROBLEM: Context: His grandfather was Septimus Burt Link Information: he Hon Septimus Burt KC (25 October 1847 – 15 May 1919) Answer: 1847 

SOLUTION: What year was Richard Burt's grandfather born?

PROBLEM: Context: Calhern also played the role of the devious George Caswell, Link Information: none Answer: none

SOLUTION:
Who directed Calhern in his role as the devious George Caswell?