Question: what are the main sectors of the economy
[{'answer': 'Primary', 'provenance': [{'wikipedia_id': '12255159', 'title': 'Economic sector', 'start_paragraph_id': 2, 'start_character': 171, 'end_paragraph_id': 2, 'end_character': 178, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Secondary', 'provenance': [{'wikipedia_id': '12255159', 'title': 'Economic sector', 'start_paragraph_id': 3, 'start_character': 210, 'end_paragraph_id': 3, 'end_character': 219, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Tertiary', 'provenance': [{'wikipedia_id': '12255159', 'title': 'Economic sector', 'start_paragraph_id': 4, 'start_character': 184, 'end_paragraph_id': 4, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]