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

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: 'a group of people dressed professionally outside'. How many words contain the letter 'j' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a couple of people that is looking at a freez be'. How many words contain the letter 'b' in the sentence.


Output: 1