Question: under the pin code system the number of postal zone in india
[{'answer': 'nine', 'provenance': [{'wikipedia_id': '476964', 'title': 'Postal Index Number', 'start_paragraph_id': 7, 'start_character': 10, 'end_paragraph_id': 7, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::PIN structure.:Postal zones.\n'}]}]