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.

[Q]: Sentence: 'a black and white cat is playing with a computer keyboard'. How many words end with the letter 'd' in the sentence.
[A]: 2


[Q]: Sentence: 'a man swings his racket and hits a tennis ball'. How many words end with the letter 'n' in the sentence.
[A]: 1


[Q]: Sentence: 'a couple of men standing along side of a river'. How many words end with the letter 'a' in the sentence.
[A]:
2