Question: name the two finalists for the commission of the north doors
[{'answer': 'Lorenzo Ghiberti', 'provenance': [{'wikipedia_id': '691612', 'title': 'Florence Baptistery', 'start_paragraph_id': 3, 'start_character': 187, 'end_paragraph_id': 3, 'end_character': 203, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Filippo Brunelleschi', 'provenance': [{'wikipedia_id': '691612', 'title': 'Florence Baptistery', 'start_paragraph_id': 2, 'start_character': 391, 'end_paragraph_id': 2, 'end_character': 411, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '691612', 'title': 'Florence Baptistery', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 886, 'bleu_score': 0.943595104031627, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12167733803419431069}, 'section': 'Section::::Exterior.:Baptistery doors.:Lorenzo Ghiberti.\n'}]}]