instruction:
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.
question:
Question: I've been looking around the Internet. Some websites say that foods is incorrect but others say it is correct. 
Answer: Food in its commonest sense is a non-countable noun, with all the effects of that. It's already a plural. You would eat "some food" not "a food". You would say "less food" not "fewer foods". However, there is a less common usage where "a food" means "a type of food": "Cheese is a food made from milk" ... and in this form, you can pluralise it ... "Italy is the source of many delicious foods -- pizza, pasta, salami, biscotti..." For comparison, think of "a people" - Are there meta-plurals beyond "peoples"?.
answer:
yes


question:
Question: I'm having a serious argument with a friend on the status of the word "suck" when I used it about him by saying "You suck!" because he missed a train. We are both non-native English speakers. He claimed that I used it as a foul or slang term. I vehemently disagreed with him about it. I told him that the word "suck" can be used to describe something inefficient or not good enough as well like it is used in the example "Samsung mobile sucks". Am I right to describe the use of the word "suck" in such context? 
Answer: Yes, as used in the OP, "sucks" is always slang. SUCKS transitive verb; slang: a. To be highly unpleasant or disagreeable: This job sucks. b. To be of poor or inferior quality: The acting in that movie sucked. c. To be inept: I suck at math. see TFD The fixed-phrase "this/that SUCKS dick/cock" gained currency exclusively among male American youth in the early 1970's as a derogatory slang expression of general contempt for some object, activity, or person. The phrase was, as intended, unapologetically misogynistic and homophobic. In the seventies, female youth never employed this idiom. No surprise there, though this is no longer the case. By the late seventies, probably in order to evade adult censure (and since youth knew precisely what was intended), the last word of the phrase was dropped. If the term is currently considered to be non-vulgar it is most likely due to this partial sanitization and because contemporary youth are ignorant of the original misogynistic and homophobic intent. see, ELU; UE;.
answer:
no


question:
Question: The question is quite straightforward: Which of the following is preferable? "I keep myself up-to-date on the latest technology." "I keep myself up to date on the latest technology." 
Answer: According to the Oxford English Dictionary, as quoted by the site below, you hyphenate if the compound adjective is before the noun and don't hyphenate if it is after the noun. With compound adjectives formed from the adverb well and a participle (e.g., well-known), or from a phrase (e.g., up-to-date), you should use a hyphen (or hyphens) when the compound comes before the noun: well-known brands of coffee; an up-to-date account, but not when the compound comes after the noun: His music was also well known in England. Their figures are up to date. From Oxford Dictionaries via Adverbs and Hyphens by Maeve Maddox for Daily Writing Tips. In this case the noun is myself and before the adjective, so no hyphen. In other styles, this may not necessarily hold true. For instance, in APA style, hyphens are discouraged unless they add clarity.
answer:

yes