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

Input: Consider Input: Sentence: 'many different species of sheep in display at a museum'. How many words contain the letter 'p' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a pizza pie is on a wooden serving tray'. How many words contain the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a man on a surfboard catches air over a wave'. How many words contain the letter 'f' in the sentence.


Output: 1