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.
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Question: 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

Answer: How many people lived in San Francisco the year Davis embarked on his journey to the city?


Question: Context: Disney+, launched in November 2019 Link Information: none Answer: none

Answer: Who owned more wealth when Disney+ was launched, Bob Iger or Rupert Murdoch?


Question: Context: William Pugh of ‘‘Kilthrew’’ was the Sheriff of Montgomeryshire in 1767 and his son William, who was also Sheriff of Montgomeryshire in 1813 Link Information: The office of High Sheriff of Montgomeryshire was established in 1541 Answer: 1541 

Answer:
What year did the appointed office that William Pugh of "Kilthrew" and his son once occupied found?