Question: when was the last grand final collingwood won
[{'answer': '1958', 'provenance': [{'wikipedia_id': '90407', 'title': 'Collingwood Football Club', 'start_paragraph_id': 14, 'start_character': 289, 'end_paragraph_id': 14, 'end_character': 293, 'bleu_score': 1.0, 'section': 'Section::::History.:1950s: Melbourne rivalry.\n'}]}, {'provenance': [{'wikipedia_id': '90407', 'title': 'Collingwood Football Club', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 147, 'bleu_score': 0.929712191543383, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1653689010293526429}, 'section': 'Section::::History.:1950s: Melbourne rivalry.\n'}]}]