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

Example Input: Sentence: 'a mother zebra standing next to a baby zebra'. How many words contain the letter 'e' in the sentence.
Example Output: 4

Example Input: Sentence: 'a pair of people swimming out to sea on some surfboards'. How many words contain the letter 'j' in the sentence.
Example Output: 0

Example Input: Sentence: 'a group of cows walking in a grassy field'. How many words contain the letter 'p' in the sentence.
Example Output:
1