In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify given passage into two categories: (1) "yes" if the given context is useful in answering the question, and (2) "no" if the given context is not useful.

Input: Consider Input: Context: Katy Perry rocking the Wii safety strap during the halftime show. #SuperBowl Funny Or Die (@funnyordie) February 2, 2015 Question: who was wearing a safety strap? Answer: katy perry

Output: yes


Input: Consider Input: Context: In regards to my new career as head ref for #OSUvsORE - Hey, I don't have a series any more - I had to do something. #OSUvsORE— Bob Newhart (@BobNewhart) January 13, 2015 Question: what is @bobnewharts new career? Answer: head ref for osuvsore

Output: yes


Input: Consider Input: Context: must have hats to get lucky— Pharrell's Hat (@Pharrellhat) January 27, 2014 Question: what do you need to get lucky? Answer: you must have hats


Output: yes