Question: what is the origin of the name russia
[{'answer': 'people', 'provenance': [{'wikipedia_id': '21485670', 'title': "Names of Rus', Russia and Ruthenia", 'start_paragraph_id': 1, 'start_character': 45, 'end_paragraph_id': 1, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'regions', 'provenance': [{'wikipedia_id': '21485670', 'title': "Names of Rus', Russia and Ruthenia", 'start_paragraph_id': 1, 'start_character': 53, 'end_paragraph_id': 1, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'medieval states', 'provenance': [{'wikipedia_id': '21485670', 'title': "Names of Rus', Russia and Ruthenia", 'start_paragraph_id': 1, 'start_character': 66, 'end_paragraph_id': 1, 'end_character': 81, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21485670', 'title': "Names of Rus', Russia and Ruthenia", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 319, 'bleu_score': 0.567753295638441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11090177689965362480}, 'section': 'Section::::Abstract.'}]}]