Question: who do richmond supporters consider their biggest rival
[{'answer': 'Collingwood', 'provenance': [{'wikipedia_id': '5272335', 'title': 'Rivalries in the Australian Football League', 'start_paragraph_id': 2, 'start_character': 417, 'end_paragraph_id': 2, 'end_character': 428, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5272335', 'title': 'Rivalries in the Australian Football League', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 402, 'bleu_score': 0.921555793996895, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11978647510706466332}, 'section': 'Section::::Victorian rivalries.:Richmond v Collingwood.\n'}]}]