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

Sentence: 'people holding a surfboard and walking down the beach'. How many words contain the letter 'n' in the sentence.
4

Sentence: 'a person leaning on an elephant statue near trees'. How many words contain the letter 's' in the sentence.
3

Sentence: 'the umpire stands over a baseball catcher as the batter swings'. How many words contain the letter 'b' in the sentence.

2