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

[Q]: Sentence: 'a clock in the middle of a building'. How many words contain the letter 'x' in the sentence.
[A]: 0

[Q]: Sentence: 'an asian man ad woman on their cell phones'. How many words contain the letter 'i' in the sentence.
[A]: 2

[Q]: Sentence: 'three surf boarders talk on a dirty beach covered with seaweed'. How many words contain the letter 'e' in the sentence.
[A]:
5