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.

Ex Input:
Sentence: 'a group of people are standing outside while one holds an open umbrella'. How many words end with the letter 'n' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a paper with a cookie on it as well as a marker'. How many words end with the letter 'r' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a giraffe walking through a grass covered field'. How many words end with the letter 'a' in the sentence.

Ex Output:

2