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 man loading a truck with two pieces of luggage'. How many words end with the letter 'a' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a public bathroom with four toilet stalls and four urinals on the wall'. How many words end with the letter 's' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a number of animals on a field with trees'. How many words end with the letter 'r' in the sentence.

Ex Output:

1