Question: when was do androids dream of electric sheep written
[{'answer': '1968', 'provenance': [{'wikipedia_id': '23284', 'title': 'Do Androids Dream of Electric Sheep?', 'start_paragraph_id': 1, 'start_character': 204, 'end_paragraph_id': 1, 'end_character': 208, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23284', 'title': 'Do Androids Dream of Electric Sheep?', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 668, 'bleu_score': 0.9601968849001611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7295237745646137178}, 'section': 'Section::::Abstract.'}]}]