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

[EX Q]: Sentence: 'a person that is fixing a pillow on a couch'. How many words contain the letter 's' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a fire hydrant on the side of the road near a building'. How many words contain the letter 'a' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'someone surfing on a big wave on a sunny day'. How many words contain the letter 'u' in the sentence.
[EX A]:
2