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

[Q]: Sentence: 'a sign asking for witnesses is posted in front of a destroyed home'. How many words contain the letter 'y' in the sentence.
[A]: 1


[Q]: Sentence: 'a cat that is laying down with a mouse on top of it'. How many words contain the letter 'm' in the sentence.
[A]: 1


[Q]: Sentence: 'a white longheaired dog eating a birthday cake'. How many words contain the letter 'z' in the sentence.
[A]:
0