Question: how many types of number plate in nepal
[{'answer': '0001 to 9999', 'provenance': [{'wikipedia_id': '36900941', 'title': 'Vehicle registration plates of Nepal', 'start_paragraph_id': 7, 'start_character': 45, 'end_paragraph_id': 7, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::Current system.\n'}]}, {'provenance': [{'wikipedia_id': '36900941', 'title': 'Vehicle registration plates of Nepal', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 57, 'bleu_score': 0.7860753021519781, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4991777492328071772}, 'section': 'Section::::Current system.\n'}]}]