Given the task definition and input, reply with output. In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.

Context: #Sharknado2 was filmed in just 18 days. Credit to everyone, it totally looks like a 24 day shoot. #Sharknado2TheSecondOne Jeff Dwoskin (@bigmacher) July 31, 2014 Answer: sharknado 2
what film is being referenced?