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

Example Input: Sentence: 'man in blue shirt hitting a tennis ball back'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a airplane is seen at the airport with other airplanes'. How many words contain the letter 'z' in the sentence.
Example Output: 0

Example Input: Sentence: 'a guy with a skate board under a bridge'. How many words contain the letter 'e' in the sentence.
Example Output:
3