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: When your friend go dancing with strangers at the club and u just don’t know what to do # Triyoncé (@tribranchvo) February 5, 2018 Question: what did katy perry do in a living room? Answer: help deliver babies
Example Output: no

Example Input: Context: Dearest Containment fans, we made 13 wonderful episodes of a powerful story. We'll make more if someone asks us, but in the meantime, enjoy!— julieplec (@julieplec) May 12, 2016 Question: what percentage of flights is canceled? Answer: 30 percent.
Example Output: no

Example Input: Context: Niagra Falls has frozen over. Next: Hell. Cheese Alone (@cheesenomad) February 18, 2015 Question: why did people call the phoenix police and dispacth center? Answer: to express support
Example Output:
no