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 bird sitting on the neck of a giraffe'. How many words start with the letter 'o' in the sentence.

A: 2
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Q: Sentence: 'a fire truck and an ambulance driving down the street'. How many words start with the letter 'a' in the sentence.

A: 4
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Q: Sentence: 'some cut up broccoli and meat sitting on top of some rice'. How many words start with the letter 's' in the sentence.

A:
3
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