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

Sentence: 'a young man dressed as a nun skateboards down the street'. How many words contain the letter 'e' in the sentence.
4

Sentence: 'a very cute white dog standing by a table with food'. How many words contain the letter 'o' in the sentence.
2

Sentence: 'a person skiing down a mountain posing for a picture'. How many words contain the letter 'r' in the sentence.

3