Question: the venue and year of earth summit on conservation of biodiversity was
[{'answer': 'Rio de Janeiro', 'provenance': [{'wikipedia_id': '324783', 'title': 'Earth Summit', 'start_paragraph_id': 1, 'start_character': 88, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '3 to 14 June 1992', 'provenance': [{'wikipedia_id': '324783', 'title': 'Earth Summit', 'start_paragraph_id': 1, 'start_character': 256, 'end_paragraph_id': 1, 'end_character': 273, 'bleu_score': 0.668740304976422, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '324783', 'title': 'Earth Summit', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 273, 'bleu_score': 0.8321754546176371, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7632129401750615260}, 'section': 'Section::::Abstract.'}]}]