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 riding a wave on top of  surfboards'. How many words end with the letter 'f' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man and his dog are walking away from the ocean with a surfboard'. How many words end with the letter 'e' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'three zebras mill about in a grassy enclosure'. How many words end with the letter 'y' in the sentence.

Ex Output:

1