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

[Q]: Sentence: 'a mirror above a bathroom sink next to a window'. How many words contain the letter 'v' in the sentence.
[A]: 1


[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


[Q]: Sentence: 'a person riding skis on a snow covered slope holding poles'. How many words contain the letter 'd' in the sentence.
[A]:
3