Question: how many structures burned in the santa rosa fire
[{'answer': 'more than 5,643 structures', 'provenance': [{'wikipedia_id': '55488326', 'title': 'Tubbs Fire', 'start_paragraph_id': 2, 'start_character': 105, 'end_paragraph_id': 2, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]