instruction:
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.
question:
Context: He launched Magill magazine in September 1977 with Noel Pearson and Mary Holland. Link Information: Mary Holland (19 June 1935 – 7 June 2004) Answer: 42
answer:
How old was Mary Holland when Magill magazine was launched?


question:
Context: He attended the Higher Command and Staff Course, graduating in April 1991 Link Information: The Higher Command and Staff Course is a staff course for senior military officers of the United Kingdom armed forces and allies. Answer: United Kingdom 
answer:
In which country did Trousdell attend school as an officer?


question:
Context: . In 2007, he returned to Macedonia and signed with Macedonian First League Link Information: none Answer: none
answer:

How many teams were in Macedonian First League?