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

Example Input: Sentence: 'there is a person awaiting to cross this street'. How many words contain the letter 'a' in the sentence.
Example Output: 2

Example Input: Sentence: 'a woman watching another woman cook a dish in a wok on an electric hotplate'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'a toddler eating a something with chocolate on it'. How many words contain the letter 'c' in the sentence.
Example Output:
1