Question: nickname given to railroad executives due to shady practices of their businesses
[{'answer': 'Robber Barons'}, {'answer': 'Robber baron', 'provenance': [{'wikipedia_id': '2385379', 'title': 'Robber baron (industrialist)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2385379', 'title': 'Robber baron (industrialist)', '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': 1971030759276330397}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2385379', 'title': 'Robber baron (industrialist)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 187, 'bleu_score': 0.78981801323022, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1971030759276330397}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2385379', 'title': 'Robber baron (industrialist)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['"Robber baron" is a derogatory metaphor of social criticism originally applied to certain late 19th-century American businessmen who were accused of using unscrupulous methods to get rich, or expand their wealth, for example Cornelius Vanderbilt taking money from government-subsidized shippers, in order to not compete on their routes.', 'Robber baron" is a derogatory metaphor of social criticism originally applied to certain late 19th-century American businessmen who were accused of using unscrupulous methods to get rich, or expand their wealth, for example Cornelius Vanderbilt taking money from government-subsidized shippers, in order to not compete on their routes.', '"Robber baron" is a derogatory metaphor of social criticism originally applied to certain late 19th-century American businessmen who were accused of using unscrupulous methods to get rich, or expand their wealth,']}}]}]