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 is pumping gas into a truck at a gas station'. How many words end with the letter 's' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'some seagulls are flying over some small boats'. How many words end with the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a cow is on the side of a road as a woman in a car holds up her black dog to the window'. How many words end with the letter 's' in the sentence.

Ex Output:

3