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: In 1918, Dodds left Sonny Celestin's outfit to play in Fate Marable's riverboat band. Link Information: none Answer: none
answer:
Who made more money the year Dodds joined Fate Marable's riverboat band, Louis Armstrong or Jimmy Palao?


question:
Context: but the helpful curator of the American Museum of Natural History, Link Information: none Answer: none
answer:
Who is the current curator of the museum featured in "We're Back! A Dinosaur's Story"?


question:
Context: the purchase of Alaska from the Russian Empire by the United States in 1867. Link Information: The purchase added 586,412 sqmi of new territory to the United States for the cost of $7.2 million.  Answer: $7.2 million
answer:

How much did the purchase of 1867 cost the buyer?