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

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

Output: 4

Input: Consider Input: Sentence: 'a big sign that is lit up near some buildings'. How many words contain the letter 'r' in the sentence.

Output: 1

Input: Consider Input: Sentence: 'broccoli cauliflower and carrots in a white bowl'. How many words contain the letter 'v' in the sentence.
Output: 0