Question: what are the most fertile regions of pakistan
[{'answer': 'Punjab', 'provenance': [{'wikipedia_id': '23363', 'title': 'Geography of Pakistan', 'start_paragraph_id': 1, 'start_character': 346, 'end_paragraph_id': 1, 'end_character': 352, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'northern Sindh', 'provenance': [{'wikipedia_id': '23363', 'title': 'Geography of Pakistan', 'start_paragraph_id': 23, 'start_character': 325, 'end_paragraph_id': 23, 'end_character': 339, 'bleu_score': 1.0, 'section': 'Section::::Geographical regions.:The northern highlands.\n'}]}, {'answer': 'Indus River basin', 'provenance': [{'wikipedia_id': '23363', 'title': 'Geography of Pakistan', 'start_paragraph_id': 23, 'start_character': 293, 'end_paragraph_id': 23, 'end_character': 310, 'bleu_score': 1.0, 'section': 'Section::::Geographical regions.:The northern highlands.\n'}]}, {'provenance': [{'wikipedia_id': '23363', 'title': 'Geography of Pakistan', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 433, 'bleu_score': 0.9716239638199891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10809383810976261928}, 'section': 'Section::::Geographical regions.:The northern highlands.\n'}]}]