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: Boom, boom, BOOM! Katy Perry broke the halftime show record with 118.5 million viewers. The game had a record 114.4M — Brian A. Hernandez (@BAHjournalist) February 2, 2015 Question: how many viewers did the halftime show have? Answer: 118.5 million.
Example Output: yes

Example Input: Context: Almost 2/3 of American mothers say they would prefer a Mother's Day gift that helps someone else: Would yours?— World Vision USA (@WorldVisionUSA) May 7, 2014 Question: what role did carrie fisher play in the movie star was? Answer: carrie fisher played princess leia.
Example Output: no

Example Input: Context: Upbeat mood at #OccupyCentral in Hong Kong, but some students are making sure people stay focused on the cause: Jethro Mullen (@jethromullen) September 30, 2014 Question: what protect is being referenced? Answer: occupy central
Example Output:
yes