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

Sentence: 'street signs are affixed to a utility pole'. How many words contain the letter 'u' in the sentence.
1

Sentence: 'a living room with couches chairs and tables'. How many words contain the letter 'a' in the sentence.
4

Sentence: 'a person jumps in the air after a frisbe'. How many words contain the letter 'e' in the sentence.

4