Question: why the koeberg power plant was built in the western cape
[{'answer': 'more economical', 'provenance': [{'wikipedia_id': '584381', 'title': 'Koeberg Nuclear Power Station', 'start_paragraph_id': 5, 'start_character': 233, 'end_paragraph_id': 5, 'end_character': 248, 'bleu_score': 1.0, 'section': 'Section::::Design.\n'}]}, {'provenance': [{'wikipedia_id': '584381', 'title': 'Koeberg Nuclear Power Station', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 605, 'bleu_score': 0.9804854598160591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10584392017965858608}, 'section': 'Section::::Design.\n'}]}]