Question: what's the name for earth's supply of water
[{'answer': 'Fresh water', 'provenance': [{'wikipedia_id': '230001', 'title': 'Fresh water', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'salt water', 'provenance': [{'wikipedia_id': '230001', 'title': 'Fresh water', 'start_paragraph_id': 3, 'start_character': 88, 'end_paragraph_id': 3, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': "`` sweet water ''"}]