Question: who is the father of lucius in gladiator
[{'answer': 'Lucius Verus', 'provenance': [{'wikipedia_id': '3616797', 'title': 'Gladiator (2000 film)', 'start_paragraph_id': 26, 'start_character': 35, 'end_paragraph_id': 26, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '3616797', 'title': 'Gladiator (2000 film)', 'start_paragraph_id': 26, 'start_character': 12, 'end_paragraph_id': 26, 'end_character': 193, 'bleu_score': 0.7319157311562481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3495000950540667029}, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '3616797', 'title': 'Gladiator (2000 film)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3495000950540667029}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3616797', 'title': 'Gladiator (2000 film)', 'section': 'Section::::Cast.\n', 'start_paragraph_id': 26, 'end_paragraph_id': 26, 'meta': {'evidence_span': ['Spencer Treat Clark as Lucius Verus: The young son of Lucilla. He is named after his father Lucius Verus, who was co-emperor until AD 169. He is also the grandson of Marcus Aurelius.', 'BULLET::::- Spencer Treat Clark as Lucius Verus: The young son of Lucilla. He is named after his father Lucius Verus, who was co-emperor until AD 169. He is also the grandson of Marcus Aurelius.\rhighlight sentence(s) containing evidence, not only the answer']}}]}]