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: such as the Swiss band Hellhammer (later to become Celtic Frost) Link Information:  Formed in 1981 as Hellhammer, the band became Celtic Frost in 1984 Answer: 1984
answer:
In what year did Hellhammer become Celtic Frost?


question:
Context: In 2015, he released his second studio album, Lantern Link Information: released on December 18, 2015,  Answer: Darkest Before Dawn 
answer:
What albums did Pusha T release the year Lantern was released?


question:
Context: The Bedrock Community Players is mounting Link Information: Being a Ghost Story of Christmas, commonly known as A Christmas Carol, is a novella by Charles Dickens Answer: Charles Dickens
answer:

Who is the author of the play the Bedrock Community Players are going to perform?