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: I debated with my peers that we can use the word emails when referring to more than one and it would be grammatically right. But most of them said since we don't say we received mails today, similarly we won't say we received emails . Quick advice please. 
Answer: Dan Bron's comment (above) that e-mail/email at its inception was treated as a mass noun is correctand so is Kristina Lopez's comment (above) that e-mail/email is widely applied today not just to the medium of electronic mail but to individual messages sent and received in that medium. For many years the technology magazines where I worked enforced a strict house rule: e-mail (and later email) referred to "electronic mail" as a mode of communication, and individual messages had to be termed "e-mail [or email] messages." But three or four years ago, the overwhelming weight of popular usage prevailed, and we began to accept the use of email as a singular noun that could take an indefinite article, and emails as a plural nounboth referring to individual messages. It is probably not coincidental that other forms of electronic communication receive similar treatment in popular (and some publishing) usage: a text and texts for "a text message" and "text messages," respectively; and an IM and IMs for "an instant messaging message" and "instant messaging messages" (as I recall, people used to avoid "instant messaging message" by conflating the technology with the individual message to produce "instant message"). At publishing houses, the proper handling of "an e-mail [or email]" versus "an e-mail [or email] message" remains a house style issuethere is no universally agreed-upon preference. If you are beholden to no one's style guide, you are free to use the wording that you like better. But the overall tendency, I believe, is toward accepting an email and emails as collapsed forms of "an electronic mail message" and "electronic mail messages.".
[EX A]: no

[EX Q]: Question: What can I call someone (a friend) who is always asking for favours such as: if you are going downtown, can you buy this for me please or, can you lend me your car for an hour or, if you have some spare time, can you post this letter for me please because I am so busy today He doesn't seem to realise or, pretends not to, that there is a limit to asking for help or favours from other people. 
Answer: He may be called a moocher. It is used for a person who tries to get to something free of charge.
[EX A]: yes

[EX Q]: Question: I know that Sussex and Middlesex are in England. It looks to me as if there is a pattern in names. What does the suffix -sex mean? Where does it come from? 
Answer: The -sex suffix is from Anglo-Saxon / Old English, with the actual meaning being "Saxon". Sussex is essentially "South Saxon". Middlesex is "Middle Saxon". Essex is "East Saxon". Wessex is "West Saxon". Most of the wiki pages for these places will have the toponymy definition.
[EX A]:
yes