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

[Q]: Sentence: 'two children practicing for a ski race without poles'. How many words contain the letter 'e' in the sentence.
[A]: 3

[Q]: Sentence: 'a dog lying down with a blanket on top of it'. How many words contain the letter 'o' in the sentence.
[A]: 5

[Q]: Sentence: 'young man about to tackling a wave on his surfboard'. How many words contain the letter 'y' in the sentence.
[A]:
1