instruction:
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: He commanded the U.S. forces in the Battle of Tirad Pass, 2 December 1899, where General Gregorio del Pilar was killed Link Information: He was promoted to brigadier-general after this event. Answer: 1 
answer:
How long had Gregorio del Pilar been a General for when he was killed?


question:
Context: Wilson then appeared in the CBS sitcom Rules of Engagement Link Information: none Answer: none
answer:
How many episodes had already aired by the time Wilson appeared on Rules of Engagement?


question:
Context: he emigrated to South Africa and than to Western Australia in early 1890 Link Information: The state has about 2.6 million inhabitants  Answer: South Africa
answer:

Which of the two countries Taylor emigrated to by 1890 has a greater population?