Question: what is the capital of azerbaijan in europe
[{'answer': 'Baku', 'provenance': [{'wikipedia_id': '746', 'title': 'Azerbaijan', 'start_paragraph_id': 17, 'start_character': 1131, 'end_paragraph_id': 17, 'end_character': 1135, 'bleu_score': 1.0, 'section': 'Section::::History.:From the Sasanid period to the Safavid period.\n'}]}]