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: #Tavurvur this AM, #Rabaul district affected so far, @BurnetInstitute staff all ok, hoping all closer got out #PNG. Shelley Hendel (@Shelleyjlh) August 29, 2014 Question: what is burnet institute staff safe from? Answer: tavurvur

yes