Well it depends on the certain way you are saying it, if you are starting a sentence the yes but if you are not the no.
No, seasons are not capitalized.
"Can" is typically not capitalized in sentences unless it is the first word or part of a proper noun.
No, keywords do not have to be capitalized.
No it's not capitalized.
No it shouldn't be capitalized.
Wikipedia is capitalized.
No, it is not capitalized.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
yes it is capitalized
No it's not capitalized.
No it shouldn't be capitalized.
No it doesn't require to be capitalized.