Definition: 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: Two members of my team were stabbed last night in Philly. One was killed. They had only been there for two days rehearsing for the tour.— NICKI MINAJ (@NICKIMINAJ) February 18, 2015 Question: how many people were killed? Answer: one

yes