Instructions: 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.
Input: Context: I had just finished locking my bike up at Elgin & Sparks when I heard four shots - one, two then one, two. #Ottawa Peter Henderscare (@Henderburn) October 22, 2014 Question: how many people are standing on the line outside a taikoo shing polling station? Answer: 1400 people
Output:
no