Question: what was another name for the central powers
[{'answer': 'the Quadruple Alliance', 'provenance': [{'wikipedia_id': '6673', 'title': 'Central Powers', 'start_paragraph_id': 1, 'start_character': 108, 'end_paragraph_id': 1, 'end_character': 130, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6673', 'title': 'Central Powers', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 517, 'bleu_score': 0.5256241741681851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6345608547618521151}, 'section': 'Section::::Abstract.'}]}]