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

[Q]: Sentence: 'a green blue and yellow boat sitting in a harbor'. How many words contain the letter 'o' in the sentence.
[A]: 3

[Q]: Sentence: 'a beautiful old clock tower in a citys historic district'. How many words contain the letter 'a' in the sentence.
[A]: 3

[Q]: Sentence: 'three ducks on top of a paved parking lot'. How many words contain the letter 'c' in the sentence.
[A]:
1