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: We regret the mistaken RTs from our account yesterday and look forward to continuing to share the beauty and history of our parks with you NationalParkService (@NatlParkService) January 21, 2017 Question: what was mistaken in the account yesterday? Answer: rt's

yes