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

Input: Consider Input: Sentence: 'living room that has boxes packed for moving'. How many words contain the letter 'u' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'people walking down the sidewalk with no turn signs'. How many words contain the letter 'e' in the sentence.

Output: 3

Input: Consider Input: Sentence: 'a cat laying on top of a couch with a blanket'. How many words contain the letter 'z' in the sentence.
Output: 0