Question: who was the main person that introduced the social contract theory of government
[{'answer': 'Jean - Jacques Rousseau', 'provenance': [{'wikipedia_id': '39704', 'title': 'Social contract', 'start_paragraph_id': 26, 'start_character': 0, 'end_paragraph_id': 26, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Philosophers.:Jean-Jacques Rousseau\'s "Du contrat social" (1762).\n'}]}, {'provenance': [{'wikipedia_id': '39704', 'title': 'Social contract', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 831, 'bleu_score': 0.7400912474718361, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16287974063204796537}, 'section': 'Section::::Abstract.'}]}]