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: In December 2001 the Leader of the Labour Party and incumbent Prime Minister Kok announced he was stepping down as Leader and that he wouldn't stand for the election of 2002 Link Information: Willem "Wim" Kok (; 29 September 1938 – 20 October 2018) Answer: 63
[A]: How old was the Prime Minister when he announced he was stepping down?


[Q]: Context: n Indiana, where it is illegal to create a historical marker in the "state format" without first getting official approval from that state's historical bureau Link Information: none Answer: none
[A]: How many historical markers does the state of Indiana have?


[Q]: Context: The United Kingdom signified its intention to leave after a membership referendum in June 2016 and is negotiating its withdrawal. Link Information: none Answer: none
[A]:
Who led political movement to get the UK out of the EU?