In this task, you need to count the number of words in a sentence that contain the given letter

Sentence: 'a young girl is brushing her teeth  in a bathroom'. How many words contain the letter 'f' in the sentence.
0

Sentence: 'a group of men sitting by tables working on laptops'. How many words contain the letter 'l' in the sentence.
2

Sentence: 'a man sitting on a motorcycle with canisters attached to it'. How many words contain the letter 'm' in the sentence.

2