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

Example Input: Sentence: 'an elephant stands in the grass near a tree'. How many words contain the letter 'c' in the sentence.
Example Output: 0

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 zebra standing next to a pile of logs'. How many words contain the letter 'b' in the sentence.
Example Output:
1