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.

[Q]: Context: Essex skippers' other foods include creeping soft grass Link Information: none Answer: none
[A]: Of the grasses that the essex skipper eats, which is the longest?


[Q]: Context: spin-off show Holby City Link Information: Casualty, stylised as CASUALY, is a British medical drama series that airs weekly on BBC One. It is the longest-running emergency medical drama television series in the world, and the most enduring medical drama shown on prime time television in the world. Created by Jeremy Brock and Paul Unwin, it was first broadcast in the United Kingdom on BBC One on 6 September 1986.  Answer: 13
[A]: How long had Casualty been airing before its spinoff first aired?


[Q]: Context: In July 1917, Danford served as mustering officer for members of the Pennsylvania National Guard, after which he traveled to Fort Sill, where he served as an artillery instructor. Link Information: The site of Fort Sill was staked out on 8 January 1869 Answer: 1869
[A]:
What year was Fort Sill founded?