I'd say it was a fragment. 'The fog rolled in' seems to need something extra to form a sentence - for example...
The fog rolled in quickly - The fog rolled in across the bay
Fragment.
A fragment sentence is a partial sentence. It does not have everything it needs to be a full sentence. For example: "The dog" is a fragment.
sentences
You should not capitalize a sentence fragment following a colon.
Yes, if it doesn't have a predicate, it doesn't qualify as a sentence, only a fragment.
The fog rolled in like a thief in the night.
Do you work? is a complete sentence; it is not a sentence fragment.
"She wave." is fragment but "She waves" is a sentence.
fragment
Fragment.
sentence fragment
It is a sentence fragment
is a sentence fragment
Make each fragment into a complete sentence.
"After the storm," is not a complete sentence so it is a fragment.
A sentence is a fragment when you do not have a noun/pronoun and a verb.
A fragment sentence is a partial sentence. It does not have everything it needs to be a full sentence. For example: "The dog" is a fragment.