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

[Q]: Sentence: 'a girl is ready to serve the ball on a clay court'. How many words contain the letter 'd' in the sentence.
[A]: 1


[Q]: Sentence: 'a van follows behind a bus on a rural road'. How many words contain the letter 'q' in the sentence.
[A]: 0


[Q]: Sentence: 'a large brown dog with a white deflated ball in its mouth'. How many words contain the letter 'm' in the sentence.
[A]:
1