Question: who took the initiative to plan the first underground railway in kolkata
[{'answer': 'The MTP ( Rlys )', 'provenance': [{'wikipedia_id': '2067207', 'title': 'Kolkata Metro', 'start_paragraph_id': 4, 'start_character': 625, 'end_paragraph_id': 4, 'end_character': 640, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': 'Soviet specialists ( Lenmetroproekt )', 'provenance': [{'wikipedia_id': '2067207', 'title': 'Kolkata Metro', 'start_paragraph_id': 4, 'start_character': 654, 'end_paragraph_id': 4, 'end_character': 693, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': 'East German engineers', 'provenance': [{'wikipedia_id': '2067207', 'title': 'Kolkata Metro', 'start_paragraph_id': 4, 'start_character': 694, 'end_paragraph_id': 4, 'end_character': 715, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '2067207', 'title': 'Kolkata Metro', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 916, 'bleu_score': 0.9535643212603381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13207614543525357192}, 'section': 'Section::::History.\n'}]}]