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

Input: Consider Input: Sentence: 'little girl with her bunny beside her sitting on a bench'. How many words contain the letter 'w' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a business man is talking on the phone'. How many words contain the letter 'e' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'three zebra of different ages are standing near each other'. How many words contain the letter 's' in the sentence.


Output: 2