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: .@JohnLegend got Stevie Wonder to perform with him. Because of course. Full episode: #LipSyncBattle (@SpikeLSB) September 12, 2016 Question: what did stevie wonder do with john legend? Answer: performed with him on lip sync battle.

Ex Output:
yes


Ex Input:
Context: A5: Look at your projections. If they show you are better off selling, then sell. Hold out if it shows there are better offers. #CNNAfrica— Gossy Ukanwoke (@gossyomega) January 14, 2015 Question: what is the tweeter watching? Answer: the vice presidential debate

Ex Output:
no


Ex Input:
Context: Travelling fans who attended the defeat at Southampton have been offered ticket refunds. Sunderland AFC (@SunderlandAFC) October 21, 2014 Question: where did the defeat take place? Answer: southampton

Ex Output:

yes