Question: when was the first government formed in the world
[{'answer': 'Roman and Greek', 'provenance': [{'wikipedia_id': '21431793', 'title': 'Political history of the world', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Ancient history.\n'}]}, {'provenance': [{'wikipedia_id': '21431793', 'title': 'Political history of the world', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 416, 'bleu_score': 0.9716239638199891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16647753604633840705}, 'section': 'Section::::Ancient history.\n'}]}]