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: @Maisie_Williams Hi Maisie, Sorry you where denied. It's due to the complimentary alcohol available, we can only admit passengers over 18yrs— British Airways (@British_Airways) July 20, 2014 Question: how much does alcohol cost on this flight? Answer: it's complementary

yes