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

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 commuter train near a platform with no one on it'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a heffer cow looks at oncoming people and decides whether or not to graze'. How many words contain the letter 'y' in the sentence.


Output: 0