Question: 1. what city was built as the new capital for the abbasids
[{'answer': 'Baghdad', 'provenance': [{'wikipedia_id': '49856', 'title': 'Abbasid Caliphate', 'start_paragraph_id': 1, 'start_character': 322, 'end_paragraph_id': 1, 'end_character': 329, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Raqqa', 'provenance': [{'wikipedia_id': '49856', 'title': 'Abbasid Caliphate', 'start_paragraph_id': 65, 'start_character': 628, 'end_paragraph_id': 65, 'end_character': 633, 'bleu_score': 1.0, 'section': 'Section::::Culture.:Architecture.\n'}]}, {'answer': 'Samarra', 'provenance': [{'wikipedia_id': '49856', 'title': 'Abbasid Caliphate', 'start_paragraph_id': 27, 'start_character': 172, 'end_paragraph_id': 27, 'end_character': 179, 'bleu_score': 1.0, 'section': 'Section::::Fracture to autonomous dynasties (861–945).\n'}]}, {'provenance': [{'wikipedia_id': '49856', 'title': 'Abbasid Caliphate', 'start_paragraph_id': 65, 'start_character': 0, 'end_paragraph_id': 65, 'end_character': 1887, 'bleu_score': 0.9938365984107321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12225717813653083815}, 'section': 'Section::::Culture.:Architecture.\n'}]}]