Question: what is the genus of a grizzly bear ursus arctos
[{'answer': 'Ursus', 'provenance': [{'wikipedia_id': '35783123', 'title': 'Grizzly bear', 'start_paragraph_id': 1, 'start_character': 19, 'end_paragraph_id': 1, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]