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

Example Input: Sentence: 'a person eating a slice of pizza on a table'. How many words contain the letter 'z' in the sentence.
Example Output: 1

Example Input: Sentence: 'an orange cat is lounging on a gray couch'. How many words contain the letter 'c' in the sentence.
Example Output: 2

Example Input: Sentence: 'man in a white apron talking on cellphone'. How many words contain the letter 'c' in the sentence.
Example Output:
1