Question: who present in the parliament the last separate rail budget of india
[{'answer': 'Mamata Banerjee', 'provenance': [{'wikipedia_id': '38692549', 'title': 'Railway budget of India', 'start_paragraph_id': 8, 'start_character': 18, 'end_paragraph_id': 8, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '38692549', 'title': 'Railway budget of India', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 263, 'bleu_score': 0.9569637990759251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14889805782366349171}, 'section': 'Section::::History.\n'}]}]