Question: what celestial object lies at the center of the milky way galaxy
[{'answer': 'Galactic Center', 'provenance': [{'wikipedia_id': '373352', 'title': 'Galactic Center', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '373352', 'title': 'Galactic Center', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 277, 'bleu_score': 0.635022505265148, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5542951173218736029}, 'section': 'Section::::Abstract.'}]}]