In this task, you need to count the number of words in a sentence that end with the given letter. Answer with numbers and not words.

Input: Consider Input: Sentence: 'a group of people waiting for the bus at a bus stop while others pass by'. How many words end with the letter 's' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a young man is performing a skateboard trick above a roadway guardrail'. How many words end with the letter 's' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a multi colored parking meter sitting in front of a stairway'. How many words end with the letter 'a' in the sentence.


Output: 2