Question: when was the first mass produced electric car
[{'answer': 'December 2010', 'provenance': [{'wikipedia_id': '951197', 'title': 'History of the electric vehicle', 'start_paragraph_id': 42, 'start_character': 257, 'end_paragraph_id': 42, 'end_character': 270, 'bleu_score': 1.0, 'section': 'Section::::2000s: Modern highway-capable electric cars.\n'}]}, {'provenance': [{'wikipedia_id': '951197', 'title': 'History of the electric vehicle', 'start_paragraph_id': 45, 'start_character': 0, 'end_paragraph_id': 45, 'end_character': 302, 'bleu_score': 0.858983479300879, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18420750286731073520}, 'section': 'Section::::2010s to present.\n'}]}]