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: 'two males and a drink a laptop and a cellphone'. How many words contain the letter 'b' in the sentence.
[A]: 0


[Q]: Sentence: 'an umbrella leans against a pillar of a building'. How many words contain the letter 'u' in the sentence.
[A]:
2