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

[Q]: Sentence: 'a young man standing in front of a laptop computer'. How many words contain the letter 'y' in the sentence.
[A]: 1

[Q]: Sentence: 'a woman in a wheelchair is about to play tennis'. How many words contain the letter 'r' in the sentence.
[A]: 1

[Q]: Sentence: 'a public transit train on a train track'. How many words contain the letter 'd' in the sentence.
[A]:
0