Question: what are the main physiographic division of india
[{'answer': 'Northern Mountains', 'provenance': [{'wikipedia_id': '14597', 'title': 'Geography of India', 'start_paragraph_id': 25, 'start_character': 12, 'end_paragraph_id': 25, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Physiographic regions.:Regions.\n'}]}, {'answer': 'Peninsular Plateau', 'provenance': [{'wikipedia_id': '14597', 'title': 'Geography of India', 'start_paragraph_id': 36, 'start_character': 15, 'end_paragraph_id': 36, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::Physiographic regions.:The Himalayas.\n'}]}, {'answer': 'Indo - Gangetic Plain', 'provenance': [{'wikipedia_id': '14597', 'title': 'Geography of India', 'start_paragraph_id': 3, 'start_character': 511, 'end_paragraph_id': 3, 'end_character': 531, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Thar Desert', 'provenance': [{'wikipedia_id': '14597', 'title': 'Geography of India', 'start_paragraph_id': 3, 'start_character': 218, 'end_paragraph_id': 3, 'end_character': 229, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Coastal Plains', 'provenance': [{'wikipedia_id': '14597', 'title': 'Geography of India', 'start_paragraph_id': 29, 'start_character': 12, 'end_paragraph_id': 29, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Physiographic regions.:Regions.\n'}]}, {'answer': 'Islands', 'provenance': [{'wikipedia_id': '14597', 'title': 'Geography of India', 'start_paragraph_id': 2, 'start_character': 382, 'end_paragraph_id': 2, 'end_character': 389, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]