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

Input: Consider Input: Sentence: 'a rack full of clothes in a small bedroom'. How many words contain the letter 'o' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'an old motorcycle with the seat missing parked in a garage with other parts and motorcycles'. How many words contain the letter 'r' in the sentence.

Output: 6


Input: Consider Input: Sentence: 'several fluffy sheep are near rocks on a beach'. How many words contain the letter 'j' in the sentence.


Output: 0