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: The regiment participated in the War of 1812, the Mexican–American War, the American Civil War, the Indian Wars (1823-1879), the Spanish–American War, Philippine–American War (1899–1913), the Pancho Villa Expedition (1916–1917), World War I, World War II, and the Vietnam War. Link Information: The regiment participated in the War of 1812, the Mexican–American War, the American Civil War, the Indian Wars (1823-1879), the Spanish–American War, Philippine–American War (1899–1913), the Pancho Villa Expedition (1916–1917), World War I, World War II, and the Vietnam War. Answer: Indian Wars 

Answer: Which pre-Vietnam War conflicts that the 6th Infantry Regiment participated in last the longest?


Question: Context: Winger Reg 'JR' Smith was capped twice, scoring two goals for England in 1938. Link Information: James Christopher Reginald Smith (20 January 1912 Answer: 26

Answer: How old was Reg Smith the year he capped twice and scored 2 goals for England?


Question: Context: He went on to graduate studies at the University of California, Berkeley, where he did research in nuclear physics at the Radiation Laboratory under Link Information: In 1928, he was hired as an associate professor of physics at the University of California, Berkeley Answer: 5

Answer:
How many years had Ernest Lawrence worked at UCLA before Backus attended?