Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Question: What's the difference between the following examples: Neither of my teachers are mathematicians. None of my teachers are mathematicians.
Answer: Neither - not either - implies that there is a choice of only two. So 'neither of my teachers' is only correct if there are exactly two teachers, 'none of my teachers' can be any number.
Solution: yes
Reason: The answer is well in context with the question and gives a proper explanation to resolve it. Hence, the output "yes" is correct.

Now, solve this instance: 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"?.
Student:
yes