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

[EX Q]: Sentence: 'a woman is laughing while sitting on a bed'. How many words contain the letter 'c' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a couple sitting on seats on a train'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a mother bird sit atop a tree and feeds her two babies'. How many words contain the letter 'r' in the sentence.
[EX A]:
4