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

[Q]: Sentence: 'a group of bears sitting next to each other on a sidewalk'. How many words contain the letter 't' in the sentence.
[A]: 4


[Q]: Sentence: 'a beautiful woman holding a pink frosted cake'. How many words contain the letter 'q' in the sentence.
[A]: 0


[Q]: Sentence: 'a person up in the air on a snowboard'. How many words contain the letter 'r' in the sentence.
[A]:
3