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

[EX Q]: Sentence: 'trash cans and a fire hydrant are on the curb of a sidewalk'. How many words contain the letter 'u' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a couple sitting on seats on a train'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a living room with a view and bedroom in the background'. How many words contain the letter 'g' in the sentence.
[EX A]:
2