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

[Q]: Sentence: 'a bus station full of people walking on the side walk'. How many words contain the letter 'q' in the sentence.
[A]: 0


[Q]: Sentence: 'people walking down the sidewalk with no turn signs'. How many words contain the letter 'e' in the sentence.
[A]: 3


[Q]: Sentence: 'a tennis player on a court with a racket'. How many words contain the letter 'w' in the sentence.
[A]:
1