as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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find the cheapest train route from los angeles to san francisco.
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the cheapest train route from los angeles to san francisco is through amtrak's coast starlight. the fare for a one-way ticket is $25 and the journey takes around 12-14 hours.
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