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 cat laying on top of a couch on its side'. How many words end with the letter 's' in the sentence.

A: 1
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Q: Sentence: 'a man in an arena rides a bucking horse'. How many words end with the letter 'a' in the sentence.

A: 3
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Q: Sentence: 'stacks of old phone books are featured next to a box'. How many words end with the letter 'f' in the sentence.

A:
1
****