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: Worth saying again: it is DRY dry out here. Lots of fields like this. Plowing the dust. #endangeredriver #cadrought John D. Sutter (@jdsutter) June 19, 2014 Question: what is john's concern about california? Answer: that they're having a major drought.

Output: yes


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: Pharrell a vampire 2pashk (@pashklleshaj) February 17, 2014 Question: what mythical creature is used to describe pharrell? Answer: vampire


Output: yes