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.

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
How old was the Prime Minister when he announced he was stepping down?

Context: When Waller was fourteen he was sent to a school run by Revered Gayley in the community of Media Link Information: Media, Pennsylvania Answer: Pennsylvania
What state was the school run by Reverend Gayley located in?

Context: breakthroughs occurred in visible-light and infrared imaging. Pioneered by John E. Baldwin and colleagues of the Link Information: none Answer: none

Who are the members of the group that helped John Baldwin with infrared imaging?