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

Example Input: Sentence: 'a bench is in the ocean water with a fishing pole'. How many words contain the letter 'm' in the sentence.
Example Output: 0

Example Input: Sentence: 'the zebra is showing his rear end to the camera'. How many words contain the letter 'r' in the sentence.
Example Output: 3

Example Input: Sentence: 'large giraffe in enclosed area checking out someone with a hat on'. How many words contain the letter 'e' in the sentence.
Example Output:
6