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 vine of bananas sit on a tree'. How many words start with the letter 'b' in the sentence.

A: 1
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Q: Sentence: 'man in winter clothes riding a snowboard on a gentle slope'. How many words start with the letter 'g' in the sentence.

A: 1
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Q: Sentence: 'a person and a bed in a room'. How many words start with the letter 'a' in the sentence.

A:
4
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