Question: which two district of nepal border on both india and china
[{'answer': 'Mahakali Zone', 'provenance': [{'wikipedia_id': '47316276', 'title': 'China–Nepal border', 'start_paragraph_id': 2, 'start_character': 114, 'end_paragraph_id': 2, 'end_character': 127, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Mechi', 'provenance': [{'wikipedia_id': '47316276', 'title': 'China–Nepal border', 'start_paragraph_id': 2, 'start_character': 174, 'end_paragraph_id': 2, 'end_character': 179, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47316276', 'title': 'China–Nepal border', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 179, 'bleu_score': 0.9402297675816911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5062515683653627113}, 'section': 'Section::::Abstract.'}]}]