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

[Q]: Sentence: 'a tennis player holds a ball as if to throw it in the air to serve it'. How many words contain the letter 'o' in the sentence.
[A]: 4


[Q]: Sentence: 'a blue and white fire hydrant and two cars parked across the street'. How many words contain the letter 'y' in the sentence.
[A]: 1


[Q]: Sentence: 'city street lights on in the nighttime of a medium sized city'. How many words contain the letter 'v' in the sentence.
[A]:
0