Question: what is the role of a chancellor in germany
[{'answer': 'head of government', 'provenance': [{'wikipedia_id': '20890626', 'title': 'Chancellor of Germany', 'start_paragraph_id': 1, 'start_character': 164, 'end_paragraph_id': 1, 'end_character': 182, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]