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

Example Input: Sentence: 'a child on the sand and a boat and some water'. How many words contain the letter 's' in the sentence.
Example Output: 2

Example Input: Sentence: 'a bearded man sits on a couch with an electronic device in his hand'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'two military members looking at their cell phones'. How many words contain the letter 'x' in the sentence.
Example Output:
0