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: 'four cooks are in a stainless steel kitchen'. How many words end with the letter 'n' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a train riding through tracks in a large train station'. How many words end with the letter 'n' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a man carries a yellow surfboard down a beach near the waters edge'. How many words end with the letter 'n' in the sentence.

Ex Output:

2