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

Example Input: Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.
Example Output: 4

Example Input: Sentence: 'a woman sits on the ground in front of a baby holding a flying disc'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a sleek and pointy fighter jet flying in the sky'. How many words contain the letter 'f' in the sentence.
Example Output:
2