Question: who was appointed chancellor of germany in 1923
[{'answer': 'Gustav Stresemann', 'provenance': [{'wikipedia_id': '192990', 'title': 'Gustav Stresemann', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '192990', 'title': 'Gustav Stresemann', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 0.747916350871321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17855788306634622630}, 'section': 'Section::::Abstract.'}]}]