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.

Example Input: Context: #saopaulo #worldcup #naovaitercopa protest unveils huge banner from overpass - in English. Ben Tavener (@BenTavener) April 30, 2014 Question: how are the protesters protesting? Answer: huge banner from overpass
Example Output: yes

Example Input: Context: US talks w/Saudi medieval regime, a stigma that won't be cleaned off US, on human rights of Iran--a country which is symbol of democracy!— Khamenei.ir (@khamenei_ir) June 12, 2017 Question: what sport did tweet refer to? Answer: tennis
Example Output: no

Example Input: Context: Yay! Everyone is so wonderful and supportive of my shade! This might be a problem down the line. Thank you! #notmyjetthough #imnotthatfancy— Gabourey Sidibe (@GabbySidibe) January 14, 2014 Question: when might it be a problem? Answer: down the line
Example Output:
yes