You will be given a definition of a task first, then some input of the task.
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.

Context: Stock trading humor.5月份炒股：我吃什么，狗吃什么。6月份炒股：狗吃什么，我吃什么。 7月份炒股：把狗吃了in May dog ate what I ate. In June I ate what dog ate. In July I ate the dog— Bill Bishop (@niubi) July 7, 2015 Question: what was eaten in may Answer: dog ate what i ate
Output:
yes