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

Input: Consider Input: Sentence: 'three children standing behind a little girl with a bat in her hands'. How many words contain the letter 'c' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a bunch of white hyacinths arranged in a vase'. How many words contain the letter 'r' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a group of people on the beach flying a kite'. How many words contain the letter 'r' in the sentence.


Output: 1