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

Sentence: 'a smiling  woman wearing a hat holds up a snowboard'. How many words contain the letter 'b' in the sentence.
1

Sentence: 'a apple that is sitting on top of a knife'. How many words contain the letter 'u' in the sentence.
0

Sentence: 'a bowl of carrots and green beans with a spoon'. How many words contain the letter 'c' in the sentence.

1