Question: what role did samurai play in japanese society
[{'answer': 'the ruling class', 'provenance': [{'wikipedia_id': '21604048', 'title': 'Edo society', 'start_paragraph_id': 5, 'start_character': 114, 'end_paragraph_id': 5, 'end_character': 130, 'bleu_score': 1.0, 'section': 'Section::::Description.\n'}]}, {'provenance': [{'wikipedia_id': '21604048', 'title': 'Edo society', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 544, 'bleu_score': 0.6487102354040081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10070918869785403368}, 'section': 'Section::::Description.\n'}]}]