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

Input: Consider Input: Sentence: 'two angles of a frosted donut with a bite taken out of the side'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a crowd of people flying kites near the capitol building'. How many words contain the letter 'a' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'five people posing for a picture with two open umbrellas'. How many words contain the letter 'x' in the sentence.


Output: 0