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

Input: Consider Input: Sentence: 'a smiling man holds out a card with color swatches'. How many words contain the letter 'i' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a view from a plane window near a large snowy peak'. How many words contain the letter 'u' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a close up of a business sign on a building'. How many words contain the letter 'y' in the sentence.


Output: 0