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: Yessir "BubbaClaus" da single drops today!! #urwelcome bubba watson (@bubbawatson) December 16, 2014 Question: who were they brought in by? Answer: parents

Ex Output:
no

Ex Input:
Context: @SamuelLJackson: Keep fighting and Stay Strong Strat! You can do it! #CapForStrat Samuel L. Jackson (@SamuelLJackson) May 14, 2014 Question: who does jackson encourage? Answer: strat.

Ex Output:
yes

Ex Input:
Context: @cnnsport @cnni @McIlroyRory Rory: Do you ever consciously think of your swing, or at this point, is it totally natural? #cnnaskrory Rao (@insideyourfuego) January 27, 2015 Question: what would stop @mcilroyrory from having a totally natural swing? Answer: consciously thinking about it.

Ex Output:
yes