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

Sentence: 'a young man dressed as a nun skateboards down the street'. How many words contain the letter 'e' in the sentence.
4

Sentence: 'a girl at a lake is looking at sand inside of a frisbee'. How many words contain the letter 'u' in the sentence.
0

Sentence: 'two people standing on a sandy white beach talking'. How many words contain the letter 'n' in the sentence.

4