Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.

Example Input: Question: Possible Duplicate: What is the difference between an expression and a phrase? Difference between "phrase" and "idiom" What is the difference between a phrase, an idiom and an expression? I am looking for the context where one is more appropriate than the rest. I've been using idiom and phrase more or less interchangeably.
Answer: This question asks nearly the same thing. This is the difference between an idiom and a phrase: A phrase is "a small group of words standing together as a conceptual unit", while an idiom is "a group of words established by usage as having a meaning not deducible from those of the individual words". So, the difference is that an idiom as an established meaning not directly linked to the individual words. Any idiom is a phrase. As an example, "raining cats and dogs" is both an idiom and a phrase. "A herd of cats" is a phrase but not an idiom. Expression has about the same meaning as phrase, except it is usually used of a phrase which is in common use. So an idiom is a certain sort of expression, which in turn is a subset of phrase: idiom > expression > phrase.
Example Output: yes

Example Input: Question: The phrase to boil down to something can be found in most dictionaries. However, to me, it sounds colloquial to write Finding an exact solution to Eq. 1 boils down to ... A real-life example can be found here, and many more here. Interestingly, many of the examples are by non-native speakers. Is it good style to use this phrase in formal writing? (I am prepared to hear that if people use it, then it is OK.)
Answer: Boil down to is not informal. It can be used even in formal writing.
Example Output: no

Example Input: Question: So I thought I'm sure about this and my instincts say that: "If anyone has seen them .." would be right but then again when I said it like: "If anyone have seen them .." I started thinking which one would be the right one. Can you please guide me through which is the right one and why? P.S. English is not my first language.
Answer: It's "if anyone has", because "anyone" functions as third person singular. It probably just seems right to use "have" because you would for any other number or person.
Example Output:
yes