Question: who has given the theory of unbalanced economic growth
[{'answer': 'Hirschman', 'provenance': [{'wikipedia_id': '33001914', 'title': 'Strategy of unbalanced growth', 'start_paragraph_id': 1, 'start_character': 616, 'end_paragraph_id': 1, 'end_character': 625, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33001914', 'title': 'Strategy of unbalanced growth', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 880, 'bleu_score': 0.954595509605996, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1617615769112418527}, 'section': 'Section::::Introduction.\n'}]}, {'provenance': [{'wikipedia_id': '33001914', 'title': 'Strategy of unbalanced growth', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1617615769112418527}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33001914', 'title': 'Strategy of unbalanced growth', 'section': 'Section::::Introduction.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['The theory is generally associated with Hirschman. He presented a complete theoretical formulation of the strategy.', 'The theory is generally associated with Hirschman. He presented a complete theoretical formulation of the strategy.']}}]}]