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

[Q]: Sentence: 'some zebras dirt plants and bushes'. How many words contain the letter 'r' in the sentence.
[A]: 2


[Q]: Sentence: 'adults with helmets sitting on tricycles made for children'. How many words contain the letter 'r' in the sentence.
[A]: 3


[Q]: Sentence: 'a person snowboards down a very snowy hillside'. How many words contain the letter 'y' in the sentence.
[A]:
2