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 Q]: Question: Possible Duplicate: Is it correct to use "punctuation outside of the quotations", or "inside?" I've heard that you should always place ending punctuation inside of quotes, no matter what. Are there any cases where it is appropriate for a sentence to end with ".?
Answer: Punctuation inside quotes is a rule that was invented by American publishers and is not necessarily followed elsewhere. The original reason had to do with typesetting mechanics and is obsolete. Also, if you're preparing technical texts such as about computer programming, this can result in technically incorrect material. In practice, you are at the mercy of whoever is editing or grading your material. But to answer your question, it can certainly be "acceptable" in many parts.
[EX A]: yes

[EX Q]: Question: Is there a way to indicate that somebody is your girlfriend without using the possessive term my? I think saying She/He is my partner/other half is OK for married people, but it doesn't feel right for girlfriends and boyfriends.
Answer: There is nothing wrong with using my. Saying my medical appointment does not mean the medical appointment belongs to me, but just that it is connected to me in some way. Stick to my for there is no alternative which expresses the idea succinctly.
[EX A]: yes

[EX Q]: Question: If a possessive noun, which is plural, is preceded by "each", then should it use the singular or plural possessive form? For example, which of the following is correct? spend time in each other's presence spend time in each others' presence
Answer: Surely it's always each others Each other is a (reciprocal) pronoun, so in its possessive case it becomes a possessive pronoun. None of the others: its, his, hers, yours, whose etc has an apostrophe. Adding one is generally seen as a sign of poor literacy.
[EX A]:
no