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

[Q]: Sentence: 'ther e is a commuter train that is coming on the tracks'. How many words contain the letter 'r' in the sentence.
[A]: 4


[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: 'people with children flying a kite in a green field'. How many words contain the letter 'c' in the sentence.
[A]:
1