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

[EX Q]: Sentence: 'two angles of a frosted donut with a bite taken out of the side'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a clock tower next to a building in a city'. How many words contain the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a track moving on the road with two people'. How many words contain the letter 'w' in the sentence.
[EX A]:
2