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

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: 'a pair of tennis players on a tennis court'. How many words contain the letter 'u' in the sentence.
1

Sentence: 'two men are in playing in the ocean'. How many words contain the letter 'm' in the sentence.

1