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.

[Q]: Context: the Official Airline Guide (OAG) listed up to eight round trip flights a day operated by Time Air nonstop between Lethbridge and Calgary with Fokker F27 Friendship Link Information: the airline was operating larger Dash 7 turboprops on the Lethbridge-Calgary route Answer: Dash 7
[A]: How many more passengers could fly on the Dash 7 compared with the Fokker F27 Friendship?


[Q]: Context: In 1988 he returned to San Francisco Link Information: none Answer: none
[A]: Was the crime rate in London higher than San Francisco the year Mitchison returned to San Francisco?


[Q]: Context: This was the band's first album without lead vocalist Limahl Link Information: Bass player Nick Beggs, already the group's main backing singer, took over lead vocal duties, Answer: Limahl
[A]:
Of the two lead vocalists of Kajagoogoo, who has a birth date that is earliest in the year?