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.

[Q]: 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.
[A]: yes


[Q]: Question: is it 'a usual' or 'an usual'? 'A usual' sounds more correct in my head ('Today was a usual day.') than 'an usual', but u is a vowel. Which one is correct and why? 
Answer: The technical definitions are: open vowel sounds or closed vowel sounds. All open vowel sounds such as, orange, envelope and image require the article "an" to bridge the two open sounds. Closed vowel sounds typically start with an unwritten "yu" consonant such as "a university" or "a united Europe, a Europe which is united" and therefore use the more common "a" article.
[A]: no


[Q]: Question: When it comes to cities and boats named after saints, it seems that "Santa" is always female and "San" is always male. e.g. Male Saints: San Diego, San Francisco, San Antonio Female Saints: Santa Barbara, Santa Maria So why isn't "Santa Claus" a woman like all the other "Santa"s? 
Answer: The city names you quote are all derived from Spanish, where "San" (or "Santo", as @tchrist clarifies below) is the male inflection and "Santa" the female one. However, Santa Claus isn't derived from Spanish, but from Dutch, where it was originally rendered as Sante Klaas, and was modified to Santa when it was adopted into English (and from English, to the rest of the world). Here's Etymonline's take on it: from dialectal Dutch Sante Klaas, from Middle Dutch Sinter Niklaas "Saint Nicholas," English, like all other languages, borrows words from many sources, and they often carry over remnants of their original grammar or usage, even when it makes for inconsistent usage in English.
[A]:
yes