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's Halftime in a nutshell Travis Lattner (@TLatt7) February 2, 2015 Question: what is this twitter page currently discussing Answer: katy perry's halftime show

Output: yes


Input: Consider Input: Context: To clarify, I was referring to Pres Obama's national security decisions that have led to rise of #ISIL, not to the President himself— John McCain (@SenJohnMcCain) June 16, 2016 Question: who did people think john mccain was referring to? Answer: president himself

Output: yes


Input: Consider Input: Context: #iwishmyteacherknew how much I miss my dad since he got deported #edchat #ImmigrationReform Kyle Schwartz (@kylemschwartz) April 6, 2015 Question: how old was the child when his dad was deported? Answer: 3 years old


Output: yes