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: Attacks on @potus for statement on #NorthKoreaNukes are ridiculous.They act as if #NorthKorea would act different if he used nicer words 2/4 Marco Rubio (@marcorubio) August 10, 2017 Question: why is potus being attacked? Answer: for statement on north korea nukes

Output: yes

Input: Consider Input: Context: Hillary Clinton declined to comment on Trump's recent Bill Clinton attacks when I asked her today on the ropeline. Dan Merica (@danmericaCNN) December 29, 2015 Question: who declined to comment on trump's recent bill clinton attacks? Answer: hillary clinton.

Output: yes

Input: Consider Input: Context: #BlackLivesMatter protest briefly shuts down southbound 101 near #SFO KPIX 5 (@CBSSF) December 23, 2015 Question: where did they shut down the freeway? Answer: sfo
Output: yes