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.

Ex Input:
Question: This came up recently on programmers.SE, when someone (a Russian, presumably non-native English speaker) asked why we used the term "sister sites", instead of "brother sites". Of course, I'm a native English speaker, and I have no idea either, hence this question. The full question, for context, was "Several of our sister sites have taken to featuring Questions [...]". It does seem odd, considering that English (usually) uses masculine terms as the default. 
Answer: It is because only female carries the direct increase/multiplication through reproduction; that's why we also say mother tongue.

Ex Output:
no


Ex Input:
Question: How to describe a person in a word who keeps mentioning about his own life story or about himself for every topic that is being conversed? Be it interesting or boring, he has the ability to pick out something that has happened to him or he himself creates a chance to talk about himself. Edit: The person is not selfish. He does care for others. I am just saying that the person relates everything to his life and talks about it, that too not even in a conceited way. This person is experienced enough to relate everything to things that has happened to him. 
Answer: A 'megalomaniac' person which it means a person who is obsessed with his/her own power.

Ex Output:
no


Ex Input:
Question: The word year when pronounced starts with a phonetic sound of e which is a vowel sound making it eligible for being preceded by an. Yet, we tend to write a year. Why? 
Answer: I reject your premise that the word year starts with a phonetic sound of e. Here's how it is pronounced according to the various dictionaries: Wiktionary: (RP) IPA: /ji/, /j/, SAMPA: /ji@/, /j3:/; (US) enPR: yir, IPA: /ji/, SAMPA: /jir/ Merriam-Webster: \yirAmerican Heritage Dictionary of the English Language: /yir/ Collins English Dictionary: /j/ Words that start with the /j/ sound are preceded by an a, not by an an. Compare: a user, a utility, a yak.

Ex Output:

yes