Question: where does the blue lagoon water come from
[{'answer': 'nearby geothermal power plant Svartsengi', 'provenance': [{'wikipedia_id': '2519487', 'title': 'Blue Lagoon (geothermal spa)', 'start_paragraph_id': 7, 'start_character': 58, 'end_paragraph_id': 7, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::History.:Water source.\n'}]}, {'provenance': [{'wikipedia_id': '2519487', 'title': 'Blue Lagoon (geothermal spa)', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 399, 'bleu_score': 0.6644081559973181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9501483702562741315}, 'section': 'Section::::History.:Water source.\n'}]}]