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

Example Input: Sentence: 'three children standing behind a little girl with a bat in her hands'. How many words contain the letter 'c' in the sentence.
Example Output: 1

Example Input: Sentence: 'a person resting on a bench outside a furniture store'. How many words contain the letter 'e' in the sentence.
Example Output: 6

Example Input: Sentence: 'two people standing close to one another playing nintendo wii'. How many words contain the letter 'e' in the sentence.
Example Output:
5