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: Sia performed "Chandelier" on The Ellen DeGeneres Show on 19 May 2014, Link Information: The Ellen DeGeneres Show (often shortened to Ellen and stylized in all lowercase) is an American television variety comedy talk show hosted by Ellen DeGeneres. Debuting on September 8, 2003 Answer: 11
How long had the show in which Sia performed "Chandelier" in 2014 been on the air?

Context: When Harry Truman became president in April 1945, upon FDR's death, the vice presidency Link Information: As such Truman selected Alben Barkley of Kentucky as his running mate in the 1948 presidential election. When Democrats regained control as a result of the 1948 elections, Answer: 8
How many years was Harry Truman president?

Context: He also presided over the less successful committee when Bolivia and Paraguay went to war over the Gran Chaco. Link Information: The Chaco War (1932–1935; , ) was fought between Bolivia and Paraguay over control of the northern part of the Gran Chaco region (known in Spanish as Chaco Boreal) of South America, which was thought to be rich in oil. Answer: 1932

What year did Bolivia and Paraguay go to war over the Gran Chaco?