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

Input: Consider Input: Sentence: 'a pair of feet wearing slippers pointed at the floor'. How many words contain the letter 'e' in the sentence.

Output: 5

Input: Consider Input: Sentence: 'an individual poses for a picture beside a bright window'. How many words contain the letter 'y' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a pita and some fries sit on a large white plate'. How many words contain the letter 'i' in the sentence.
Output: 4