Question: when did the electoral college start in the united states
[{'answer': '1787', 'provenance': [{'wikipedia_id': '85533', 'title': 'United States Electoral College', 'start_paragraph_id': 5, 'start_character': 33, 'end_paragraph_id': 5, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}]