Question: At Pérignat there are still found remains of a Roman road and a necropolis with a sarcophagus and ceramic dated to the second century, Roman roads were physical infrastructure vital to the maintenance and development of the Roman state, and were built from about which year, through the expansion and consolidation of the Roman Republic and the Roman Empire?
{'answer': '300 BC', 'supporting_facts': [['Pérignat-sur-Allier', 3], ['Roman roads', 0]]}