Question: when did the aral sea start to dry up
[{'answer': 'the 1960s', 'provenance': [{'wikipedia_id': '68915', 'title': 'Aral Sea', 'start_paragraph_id': 2, 'start_character': 102, 'end_paragraph_id': 2, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '68915', 'title': 'Aral Sea', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 874, 'bleu_score': 0.84160296906783, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11103933633634484762}, 'section': 'Section::::Abstract.'}]}]