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.

Input: Consider Input: Context: In 1979, he joined Emmylou Harris's backing band, the Hot Band Link Information: none Answer: none

Output: How long had the Hot Band been active when Tony Brown joined them?


Input: Consider Input: Context: Born in Berlin Link Information: Berlin (, ) is the capital and largest city of Germany by both area and population. Its 3,748,148 (2018)  Answer: 3748148 

Output: How many people live in the city where Herz was born?


Input: Consider Input: Context: During the presidential campaign of 1948, as Cold War fears of communist global expansion mounted Link Information:  1948, Answer: 2


Output: How many years had the Cold War been going on at this point?