In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.

Q: Sentence: 'a man skateboarding down a rail next to a building'. How many words start with the letter 'a' in the sentence.

A: 3
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Q: Sentence: 'a man wearing a straw hat and a black shirt'. How many words start with the letter 'a' in the sentence.

A: 4
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Q: Sentence: 'a man in a top hat and tuxedo driving a horse and carriage down the road'. How many words start with the letter 'a' in the sentence.

A:
5
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