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

Example Input: Sentence: 'a clean kitchen with several cabinets a sink a coffee maker and a vase of flowers'. How many words contain the letter 'p' in the sentence.
Example Output: 0

Example Input: Sentence: 'a little baby boy wearing an vest and tie'. How many words contain the letter 'e' in the sentence.
Example Output: 4

Example Input: Sentence: 'a man holding a surfboard in his right arm'. How many words contain the letter 'r' in the sentence.
Example Output:
3