Question: what is the name of the capital city of belgium
[{'answer': 'Brussels', 'provenance': [{'wikipedia_id': '3343', 'title': 'Belgium', 'start_paragraph_id': 1, 'start_character': 344, 'end_paragraph_id': 1, 'end_character': 352, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]