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

Input: Consider Input: Sentence: 'the view from the top of a ski slope'. How many words contain the letter 'r' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a person resting on a bench outside a furniture store'. How many words contain the letter 'e' in the sentence.

Output: 6


Input: Consider Input: Sentence: 'a man and a child are playing a wii at christmas time'. How many words contain the letter 'q' in the sentence.


Output: 0