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: 'several white boats are anchored at a marina'. How many words start with the letter 's' in the sentence.

A: 1
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Q: Sentence: 'a man pulls a rolling suitcase and is wearing a suit'. How many words start with the letter 'a' in the sentence.

A: 4
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Q: Sentence: 'a doubledecker bus in some bus depot somewhere'. How many words start with the letter 's' in the sentence.

A:
2
****