Question: nathula pass is located in which state of india
[{'answer': 'Sikkim', 'provenance': [{'wikipedia_id': '1354151', 'title': 'Nathu La', 'start_paragraph_id': 1, 'start_character': 96, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1354151', 'title': 'Nathu La', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 508, 'bleu_score': 0.7686040504568951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16479966615966829719}, 'section': 'Section::::Abstract.'}]}]