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

[EX Q]: Sentence: 'three people that are looking at a monitor on the left side of the photo'. How many words contain the letter 'd' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a woman standing on a beach near the water'. How many words contain the letter 'n' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a man in swimming trunks standing on the beach watching people parasailing in the water'. How many words contain the letter 'r' in the sentence.
[EX A]:
3