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.

Ex 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

Ex Output:
yes

Ex Input:
Context: Onto a 20th lap of @Circuitcat_eng for @LewisHamilton - he's made of tough stuff this fella! #F1 MERCEDES AMG F1 (@MercedesAMGF1) February 20, 2015 Question: where has jessica cheung been since last night Answer: mong kok

Ex Output:
no

Ex Input:
Context: they were extraordinary together #GreysAnatomy ☪️ (@harryfairies) April 24, 2015 Question: how much was spilled into the river? Answer: 143 million gallons

Ex Output:
no