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.

Q: Context: Corrected Link: Unarmed Missouri teen killed by officer after 'physical confrontation' NBC News (@NBCNews) August 10, 2014 Question: where did he meet him and his mom? Answer: on a plane

A: no
****
Q: Context: .The United States is raising this unprofessional incident with Russia in the appropriate diplomatic and official channels. 2/2— U.S European Command (@US_EUCOM) April 11, 2015 Question: what is the united states doing Answer: raising this unprofessional incident with russia

A: yes
****
Q: Context: From the @CDCgov, #Ebola is not airborne. Requires close contact with symptomatic infected person. 2 cc @texasinafrica — kim yi dionne (@dadakim) September 30, 2014 Question: where does the information about ebola come from? Answer: cdc gov

A:
yes
****