Question: at present in which state is the nathulla pass
[{'answer': 'the Indian state of Sikkim', 'provenance': [{'wikipedia_id': '1354151', 'title': 'Nathu La', 'start_paragraph_id': 1, 'start_character': 125, 'end_paragraph_id': 1, 'end_character': 151, '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': 0.793293687627305, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7734684866171809448}, 'section': 'Section::::Abstract.'}]}]