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.

Input: Consider Input: Context: Katy Perry's Halftime in a nutshell Travis Lattner (@TLatt7) February 2, 2015 Question: what is this twitter page currently discussing Answer: katy perry's halftime show

Output: yes

Input: Consider Input: Context: #havingitall needs to recognize each woman has a different definition of all. Trick is to want and appreciate what you have. Krista Laursen (@KristaLaursen) July 19, 2012 Question: what was the nickname of the recently deceased basketball player darryl dawkins? Answer: his nickname was chocolate thunder.

Output: no

Input: Consider Input: Context: Ivory Coast confirm: Ibrahim Toure, brother of Kolo and Yaya, died Thursday at age 28. Bleacher Report UK (@br_uk) June 20, 2014 Question: what was confirmed to have happened thursday? Answer: ibrahim toure died
Output: yes