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

Sentence: 'a man and a woman sitting in the backseat as the woman talks on a cell phone'. How many words contain the letter 's' in the sentence.
4

Sentence: 'a man holding a tennis racquet on a tennis court'. How many words contain the letter 'w' in the sentence.
0

Sentence: 'blurry photograph of a modern public restroom with urinals'. How many words contain the letter 'o' in the sentence.

4