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 group of people skiing down a mountain slope'. How many words contain the letter 'e' in the sentence.
[A]: 2

[Q]: Sentence: 'two people riding on horses on the beach'. How many words contain the letter 'o' in the sentence.
[A]:
5