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

Sentence: 'a person standing in line for food at a food truck'. How many words contain the letter 'c' in the sentence.
1

Sentence: 'a person skiing down part of a marked race course'. How many words contain the letter 'z' in the sentence.
0

Sentence: 'a man standing in a bathroom taking a picture of his self in the mirror with his cell phone'. How many words contain the letter 's' in the sentence.

4