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: No time to dwell or feel sorry for myself though, I've got a certain slam in Melbourne to prepare for! @AustralianOpen I'm coming for you!! Nicholas Kyrgios (@NickKyrgios) January 14, 2015 Answer: the australian open
what was nicholas preparing for?