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

Input: Consider Input: Sentence: 'a woman riding a motorcycle down a busy city street'. How many words contain the letter 'w' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a cat sitting on a wooden chair look at the camera'. How many words contain the letter 'd' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a group of people that are standing in the kitchen'. How many words contain the letter 'c' in the sentence.


Output: 1