next question: A bus line is an example of a public what?\nOptions:\n- electromagnetic spectrum\n- difnner\n- stanza\n- add information on spreadsheet\n- transportation system
reasoning:
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Transportation system is a system for moving persons or goods consisting of three components, the vehicle is what moves objects or traffic, the guideway is what the vehicles move along and the operations plan is the set of procedures by which traffic and vehicles are moved over the guideway. A bus line is an example of a public transportation system. The answer is transportation system.
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