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

[EX Q]: Sentence: 'a man srufing the waves on a board in front of 3 tall pillars'. How many words contain the letter 'n' in the sentence.
[EX A]: 5

[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: 'four cows are eating grass on a hillside'. How many words contain the letter 'u' in the sentence.
[EX A]:
1