In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
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Question: Context: Following the success of Miami Vice and Crime Story, Mann was to produce a new crime television show for NBC. Link Information: The series ran for five seasons Question: Which of the two successful crime television show on NBC was the longest running?

Answer: Answer: Miami Vice

Question: Context: In 1180, Ingvar Yaroslavich joined Ryurik Rostislavich in his struggle against Sviatoslav Vsevolodovich of Chernihiv. Link Information: none Question: How old was Ryurik Rostislavich when Ingvar joined him in 1180?

Answer: Answer: none

Question: Context: Following the success of Sullivan's ballet Victoria and Merrie England in 1897, Link Information: 897 ballet by the choreographer Carlo Coppi with music by Arthur Sullivan, written to commemorate Queen Victoria's Diamond Jubilee, commemorating her sixty years on the throne. Question: What was the reason Sullivan's success ballet was written and performed in 1897?

Answer:
Answer: to commemorate Queen Victoria's Diamond Jubilee