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

Example Input: Sentence: 'a person that is fixing a pillow on a couch'. How many words contain the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'a large clock mounted in the face of a building'. How many words contain the letter 'e' in the sentence.
Example Output: 4

Example Input: Sentence: 'a bird and a helicopter are flying through a cloudy sky'. How many words contain the letter 'j' in the sentence.
Example Output:
0