Question: In ancient Roman religion, Fontus or Fons (plural "Fontes", "Font" or "Source") was a god of wells and springs, a religious festival called the Fontinalia was held on October 13 in his honor, festivals in ancient Rome were an important part of Roman religious life during which eras, and one of the primary features of the Roman calendar?
{'answer': 'Republican and Imperial', 'supporting_facts': [['Fontus', 0], ['Roman festivals', 0]]}