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

Input: Consider Input: Sentence: 'a stop sign casting a shadow of a sign that says war'. How many words contain the letter 'y' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a carrot and celery are on a cutting board'. How many words contain the letter 's' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a room with furniture a pet igloo and a television'. How many words contain the letter 'e' in the sentence.


Output: 3