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: Jessica Cheung, 36, has been at Mong Kok since last night. She said the anti-occupy crowd began approaching at noon Wilfred Chan (@wilfredchan) October 3, 2014 Question: what crowd began apporaching at noon Answer: the anti occupy crowd
Example Output: yes

Example Input: Context: If 5'7" Tom Cruise can play 6'5" Jack Reacher, he can stretch a little and play 6'8" James Comey. Steve Goldstein (@alacra1) June 8, 2017 Question: how much taller is james comey than jack reacher? Answer: 3"
Example Output: yes

Example Input: Context: Firefighters have reached the 1st car by tower bucket - each of 6 cars will be emptied slowly Marc Bashoor (@PGFD_Chief) August 10, 2014 Question: what did whole food's have in it's chicken salad? Answer: tuna
Example Output:
no