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 posing next to a stop sign'. How many words contain the letter 'u' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a person leaning on an elephant statue near trees'. How many words contain the letter 's' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man and a lady on the street with others'. How many words contain the letter 'z' in the sentence.
[EX A]:
0