Question: when was the first railway budget in india introduced
[{'answer': 'November 1947', 'provenance': [{'wikipedia_id': '38692549', 'title': 'Railway budget of India', 'start_paragraph_id': 5, 'start_character': 72, 'end_paragraph_id': 5, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '38692549', 'title': 'Railway budget of India', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 85, 'bleu_score': 0.850733133512352, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8825803065204139903}, 'section': 'Section::::History.\n'}]}]