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: 'the boy is sitting on a coach holding on to a remote'. How many words end with the letter 'a' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'some buildings a truck a person and some trees on a hill'. How many words end with the letter 'a' in the sentence.

Ex Output:

3