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: 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
How long had Casualty been airing before its spinoff first aired?

Context: In December 2014, Lyons tested at Daytona International Speedway in an ARCA Racing Series car that was prepared by both Rick Ware Racing and MacDonald Motorsports. Link Information: 

Daytona International Speedway is a race track in Daytona Beach, Florida, United States. Since opening in 1959, it has been the home of the Daytona 500, the most prestigious race in NASCAR. Answer: 55
How old was the race track where Lyons tested in an ARCA Racing Series car?

Context: lthough originally proposed to the French space agency CNES, it was considered too complex and expensive for a single national programme. Its acceptance within the European Space Agency's Link Information: when ESRO was merged with ELDO. ESA had ten founding member states: Belgium, Denmark, France, West Germany, Italy, the Netherlands, Spain, Sweden, Switzerland, and the United Kingdom.  Answer: Belgium

What countries make up the agency that Hipparcos was accepted to after being considered too complex for CNES?