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

Input: Consider Input: Sentence: 'an image of a man with a tennis racket in hand'. How many words contain the letter 'u' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'many people are playing a sports video game while standing up'. How many words contain the letter 'l' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a pair of doughnuts sits in a doughnut box'. How many words contain the letter 'p' in the sentence.


Output: 1