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 holding an umbrella and walking across the street'. How many words contain the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a apple that is sitting on top of a knife'. How many words contain the letter 'u' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a large airplane flying up into the sky'. How many words contain the letter 'a' in the sentence.
[EX A]:
3