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

Example Input: Sentence: 'a sign that shows you are entering into joshua tree national park'. How many words contain the letter 't' in the sentence.
Example Output: 5

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 on a court with a tennis racket'. How many words contain the letter 'p' in the sentence.
Example Output:
0