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 number of giraffes in a field near many trees'. How many words end with the letter 'r' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a long dock area full of small boats'. How many words end with the letter 'f' in the sentence.

Ex Output:

1