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

Sentence: 'a person that is fixing a pillow on a couch'. How many words contain the letter 's' in the sentence.
2

Sentence: 'a cat that is laying down with a mouse on top of it'. How many words contain the letter 'm' in the sentence.
1

Sentence: 'four men are standing holding their frisbees by a table'. How many words contain the letter 'b' in the sentence.

3