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: Sigh. Because I'm still having to use the block button for hateful messages. #YesAllWomen— Amber Naslund (@AmberCadabra) May 26, 2014 Question: what is amber using to stop hateful messages Answer: the block button
Example Output: yes

Example Input: Context: I'm not saying LJ to Cavs is done deal or I know 4 a fact; just my gut feeling based on many conversations I've had around this story...— Chris Broussard (@Chris_Broussard) July 7, 2014 Question: what alert is at level severe? Answer: french toast
Example Output: no

Example Input: Context: Google puts its best designer in charge of Google Glass, its biggest design problem. Nicholas Thompson (@nxthompson) January 15, 2015 Question: who did google put in charge of google glass? Answer: tony fadell
Example Output:
yes