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

Sentence: 'he wants everyone to know that he has serious intentions for the tennis game'. How many words contain the letter 'h' in the sentence.
5

Sentence: 'a jet airliner carrying a small shuttle above it'. How many words contain the letter 'r' in the sentence.
2

Sentence: 'apartment living room showing tv and few furnishings'. How many words contain the letter 'm' in the sentence.

2