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

Example Input: Sentence: 'the street corner is flooded deep with water'. How many words contain the letter 'f' in the sentence.
Example Output: 1

Example Input: Sentence: 'a large elephant is walking by some bars'. How many words contain the letter 'v' in the sentence.
Example Output: 0

Example Input: Sentence: 'a person holds a racket close to a flying tennis ball'. How many words contain the letter 'e' in the sentence.
Example Output:
4