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 container of mouthwash is sitting on the kitchen sink'. How many words end with the letter 'n' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a person riding a bike on a city street near a clock tower'. How many words end with the letter 'n' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a couple if black cows standing in a field '. How many words end with the letter 'a' in the sentence.

Ex Output:

2