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

Input: Consider Input: Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'man and woman posing for picture before prom'. How many words contain the letter 'c' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a person leans back while holding onto a flying object'. How many words contain the letter 'v' in the sentence.


Output: 0