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

Sentence: 'a person in the air on skis on a mountain slope'. How many words contain the letter 'w' in the sentence.
0

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

Sentence: 'a bearded man enjoying the dirst bite of a hot dog'. How many words contain the letter 's' in the sentence.

1