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 guy on a surf board riding the waves in the ocean'. How many words end with the letter 'g' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a laptop with the browser on a flickr page'. How many words end with the letter 'a' in the sentence.

Ex Output:

2