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

Example Input: Sentence: 'a red car parked with a gas pump inserted into it'. How many words contain the letter 'l' in the sentence.
Example Output: 0

Example Input: Sentence: 'some kids are all taking a photograph together'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'three surf boarders talk on a dirty beach covered with seaweed'. How many words contain the letter 'e' in the sentence.
Example Output:
5