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.

Context: Davis sailed for San Francisco, California, around Cape Horn in 1852 Link Information: By 1890, San Francisco's population approached 300,000 Answer: approached 300,000
How many people lived in San Francisco the year Davis embarked on his journey to the city?

Context: The Vorem Holz 3 archeological site contains the remains of a Bronze Age settlement in the Pieterlen municipality. Link Information: none Answer: none
What was the duration of the Bronze Age?

Context: In 1989, he retired from the service as Postmaster General from Gondal, India. Link Information: none Answer: none
Who succeeded Hasid as Postmaster General after his retirement?