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: In my telephone conversation with Merkel, Hollande and Putin I stressed that the situation around Debaltseve was in breach of Minsk accords.— Петро Порошенко (@poroshenko) February 19, 2015 Question: whom did Петро Порошенко have telephone conversations with? Answer: merkel, hollande and putin

yes