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: 'the black horse is standing on the top of the hill'. How many words end with the letter 'f' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a snowboarder buried up to his waste in snow'. How many words end with the letter 'o' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a pile of oranges sitting in brown straw baskets'. How many words end with the letter 'n' in the sentence.

Ex Output:

2