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

Input: Consider Input: Sentence: 'a bunch of people in a big field filled with bananas'. How many words contain the letter 'r' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'dental personnel in dentist office standing in front of a computer screen'. How many words contain the letter 'w' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a computer desk is full of office equipment'. How many words contain the letter 'p' in the sentence.


Output: 2