TASK DEFINITION: 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.
PROBLEM: Context: In 1988 he returned to San Francisco Link Information: none Answer: none

SOLUTION: Was the crime rate in London higher than San Francisco the year Mitchison returned to San Francisco?

PROBLEM: Context: Sims was drafted in 1981 by the NBA's Denver Nuggets Link Information: The Denver Nuggets are an American professional basketball team based in Denver.  Answer: Colorado 

SOLUTION: Which state was the team located where Sim's was drafted into the NBA in 1981?

PROBLEM: Context: "La balsa" (; Spanish for "the raft") is the debut single by the Argentine band Los Gatos, released on July 3, 1967 Link Information: none Answer: none

SOLUTION:
How long had Los Gatos been making music by the year La balsa was released?