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

[EX Q]: Sentence: 'a beautiful woman playing with a small green bird'. How many words contain the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a person that is wearing glasses looking into a mirror'. How many words contain the letter 'f' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a mostly green double decker bus parked next to some trees'. How many words contain the letter 'd' in the sentence.
[EX A]:
3