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.

Ex Input:
Context: Philae:10 years in transitLanded on cometBounced (x2)Stuck in shadeSCIENCED ANYWAYLost powerWaitedOne month to goFOUND BY ROSETTA Katie Mack (@AstroKatie) September 5, 2016 Question: how long did philae's journey take? Answer: 10 years.

Ex Output:
yes

Ex Input:
Context: Rest in Peace @starwars legend #KennyBaker - whose name I learned at age 7 because he brought #R2D2 to life. Feels like losing family... KevinSmith (@ThatKevinSmith) August 13, 2016 Question: in what state of mind was christopher cross in, upon waking up? Answer: shock

Ex Output:
no

Ex Input:
Context: Guys it's sad but true! To set the record straight.. my knee wasn't already injured or 'in rough shape' it was just fluke accident. I am so Sharna Burgess (@SharnaBurgess) October 31, 2016 Question: where are they going? Answer: to dinner

Ex Output:
no