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

Input: Consider Input: Sentence: 'a bird is standing on the edge of a book'. How many words contain the letter 'o' in the sentence.

Output: 3


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: 'man with glasses and black shirt eating a sandwich'. How many words contain the letter 'e' in the sentence.


Output: 2