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 male tennis player serving the tennis ball'. How many words end with the letter 's' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a person riding a horse and wearing armor in front of a crowd'. How many words end with the letter 'a' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a man and woman laying back on a couch'. How many words end with the letter 'a' in the sentence.

Ex Output:

2