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

Sentence: 'a stop sign that has been spray painted'. How many words contain the letter 'o' in the sentence.
1

Sentence: 'a parked blue and white motorcycle with a black seat'. How many words contain the letter 'd' in the sentence.
2

Sentence: 'people are parked along side the road by pay here signs'. How many words contain the letter 'a' in the sentence.

5