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.
--------
Question: Context: The results are in. Unfettered free trade has been a disaster for working Americans. It is high time we ended our disastrous trade policies.— Bernie Sanders (@SenSanders) August 24, 2015 Question: who is trade a disaster for? Answer: working americans

Answer: yes


Question: Context: Katy Perry rocking the Wii safety strap during the halftime show. #SuperBowl Funny Or Die (@funnyordie) February 2, 2015 Question: who was wearing a safety strap? Answer: katy perry

Answer: yes


Question: Context: Beautiful!#ProudDad #ProudGrandDad #Beyonce Mathew Knowles (@MathewKnowles) July 14, 2017 Question: whose famous celebrity is matthew knowles' daughter? Answer: beyonce

Answer:
yes