Question: the ruler of the holy roman empire that split his empire in half between his two sons was who
[{'answer': 'Theodosius I', 'provenance': [{'wikipedia_id': '504379', 'title': 'Western Roman Empire', 'start_paragraph_id': 2, 'start_character': 864, 'end_paragraph_id': 2, 'end_character': 876, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]