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: Friant Kern canal sends water 152 mi south of here to Bakersfield Cali. Mostly to farms. #endangeredriver John D. Sutter (@jdsutter) June 13, 2014 Question: who approved the first-ever wireless charging technology? Answer: @fcc
Example Output: no

Example Input: Context: CURRENT FRENCH TOAST ALERT LEVEL: SEVERE -- #fb— French Toast Alert (@FrenchToastAlrt) January 25, 2015 Question: why did presley want people to calm down? Answer: they were in midst of negotiations
Example Output: no

Example Input: Context: Seeing how HOT @JLo looked tonight makes me a lil less scared about my 40's... it also makes me want her trainer to train ME! #damngirl #AMAs— Jennifer Tisdale (@jenkellytisdale) November 24, 2014 Question: who wants jlo's trainer to work for them? Answer: jennifer tisdale
Example Output:
yes