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: LeBron James is returning to the Cleveland Cavaliers, a source tells uuu. @KingJames #LeBronToClev Chris Sheridan (@sheridanhoops) July 9, 2014 Question: which sources says lebron james is returning to cleveland? Answer: sheridanhoops.com
Example Output: yes

Example Input: Context: The new lightsaber design is good so you can kill a bad guy in front of you while also fighting two tiny bad guys to your sides Thoughtter (@ThoughtOtter) November 30, 2014 Question: what weapon is being praised? Answer: the lightsaber
Example Output: yes

Example Input: Context: #AFCON2015: Eq. Guinea sanctioned following Match 30 Ghana-Equatorial Guinea incidents -- Full Statement: CAF MEDIA (@CAF_Media) February 6, 2015 Question: who did ramie say to long live? Answer: covfefe
Example Output:
no