Question: what happened to virginia city after comstock discovered silver ore in six mile canyon
[{'answer': 'bustling commercial centers', 'provenance': [{'wikipedia_id': '801876', 'title': 'Comstock Lode', 'start_paragraph_id': 2, 'start_character': 334, 'end_paragraph_id': 2, 'end_character': 361, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '801876', 'title': 'Comstock Lode', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 400, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11387115867548400689}, 'section': 'Section::::Abstract.'}]}]