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

Input: Consider Input: Sentence: 'a person in uniform is on a motorcycle near other uniformed people'. How many words contain the letter 'r' in the sentence.

Output: 6


Input: Consider Input: Sentence: 'a person eating a slice of pizza on a table'. How many words contain the letter 'z' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'an apple sitting on a keyboard of a laptop'. How many words contain the letter 'j' in the sentence.


Output: 0