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 man in an arena rides a bucking horse'. How many words end with the letter 'a' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a city street clock standing in front of a white building'. How many words end with the letter 'f' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'the green bush is growing in the stone planter'. How many words end with the letter 'n' in the sentence.

Ex Output:

2