Question: when did scheduled common carrier freight and passenger service begin in the u.s. ​
[{'answer': 'May 1830', 'provenance': [{'wikipedia_id': '587997', 'title': 'History of rail transportation in the United States', 'start_paragraph_id': 14, 'start_character': 171, 'end_paragraph_id': 14, 'end_character': 179, 'bleu_score': 1.0, 'section': 'Section::::Chronological history.:Early period (1826–1860).\n'}]}, {'provenance': [{'wikipedia_id': '587997', 'title': 'History of rail transportation in the United States', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 448, 'bleu_score': 0.9712154609069981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 897454317093977361}, 'section': 'Section::::Chronological history.:Early period (1826–1860).\n'}]}]