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: I've become a certified psychological first aider, no longer stereotypes people at all. #Westgate6Months— sonie (@liliannyagah1) March 18, 2014 Question: what is @lilanyagah1 certified in? Answer: psychological first aider

yes