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: Some serious history doing the rounds here in #Monaco #historicgramdprix Amanda Davies (@AmandaJDavies) May 9, 2014 Question: what is monaco known for? Answer: the grand prix

Ex Output:
yes

Ex Input:
Context: Why in this day in age do we rely on the physical recovery of black boxes? Flight data should be continuously streamed to the cloud #8501qs Jacob Rossi (@jacobrossi) December 29, 2014 Question: who had to break through the ice in lake michigan Answer: cutter hollyhock

Ex Output:
no

Ex Input:
Context: "I wish we could do a time lapse and say this is how the river was 150 yrs ago and here's what we've done." -Laura John D. Sutter (@jdsutter) June 25, 2014 Question: what is here and not wanted to be given back? Answer: mother!

Ex Output:
no