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

Example Input: Sentence: 'green bananas or plantains hang in a bunch on a tree'. How many words contain the letter 'm' in the sentence.
Example Output: 0

Example Input: Sentence: 'the tennis player returns a serve of the tennis ball'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a raf jet is flying in the air'. How many words contain the letter 'l' in the sentence.
Example Output:
1