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: In 1979 they released the track, "Some Day" for the compilation album, Home Grown Volume One; "Some Day" was cowritten with Tony Backhouse Link Information: Tony Backhouse (born 1947) Answer: 32

Answer: What age was Tony Backhouse the year that he cowrote "Some Day"?


Question: Context: They continued to sail to the Isla Aves and Islas Roques where they remained until February 1682. Link Information:  It is 375 m in length and never more than 50 m in width Answer: Islas Roques

Answer: Which is the larger of the two islands where they remained until February 1682?


Question: Context: The 23 Special Wards of Tokyo were formerly Tokyo City. On July 1, 1943, it merged with Tokyo Prefecture and became Tokyo Metropolis Link Information: none Answer: none

Answer:
How many people were living in the wards of Tokyo when it became Tokyo Metropolis?