Question: when was the treaty of sugauli concluded and between whom
[{'answer': 'signed on 2 December 1815', 'provenance': [{'wikipedia_id': '1230572', 'title': 'Treaty of Sugauli', 'start_paragraph_id': 8, 'start_character': 130, 'end_paragraph_id': 8, 'end_character': 153, 'bleu_score': 0.668740304976422, 'section': 'Section::::Terms.\n'}]}, {'answer': 'ratified by 4 March 1816', 'provenance': [{'wikipedia_id': '1230572', 'title': 'Treaty of Sugauli', 'start_paragraph_id': 1, 'start_character': 158, 'end_paragraph_id': 1, 'end_character': 182, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'East India Company', 'provenance': [{'wikipedia_id': '1230572', 'title': 'Treaty of Sugauli', 'start_paragraph_id': 1, 'start_character': 195, 'end_paragraph_id': 1, 'end_character': 213, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'King of Nepal', 'provenance': [{'wikipedia_id': '1230572', 'title': 'Treaty of Sugauli', 'start_paragraph_id': 1, 'start_character': 218, 'end_paragraph_id': 1, 'end_character': 231, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1230572', 'title': 'Treaty of Sugauli', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 848, 'bleu_score': 0.9415332868646721, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11777010479342861346}, 'section': 'Section::::Abstract.'}]}]