Question: who caused to build qutub minar in delhi
[{'answer': 'Firoz Shah Tughlaq', 'provenance': [{'wikipedia_id': '799638', 'title': 'Qutb Minar', 'start_paragraph_id': 2, 'start_character': 270, 'end_paragraph_id': 2, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Iltutmish', 'provenance': [{'wikipedia_id': '799638', 'title': 'Qutb Minar', 'start_paragraph_id': 2, 'start_character': 171, 'end_paragraph_id': 2, 'end_character': 180, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Qutab - ud - din Aibak'}, {'answer': "Aibak 's successor and son - in - law Iltutmish"}, {'answer': 'Qutub - ud - din Aibak'}, {'answer': 'Qutab Ud - Din - Aibak'}, {'provenance': [{'wikipedia_id': '799638', 'title': 'Qutb Minar', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 336, 'bleu_score': 0.8719553949694501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18391206796661659736}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '799638', 'title': 'Qutb Minar', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 641, 'bleu_score': 0.541849968352481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18391206796661659736}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '799638', 'title': 'Qutb Minar', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ["Qutb ud Din Aibak, founder of the Delhi Sultanate, started construction of the Qutb Minar's first storey around 1192. In 1220, Aibak's successor and son-in-law Shamsuddin Iltutmish completed a further three storeys. In 1369, a lightning strike destroyed the top storey. Firoz Shah Tughlaq replaced the damaged storey, and added one more. Sher Shah Suri also added an entrance to this tower while he was ruling and Humayun was in exile.", 'Firoz Shah Tughlaq replaced the damaged storey, and added one more. Sher Shah Suri also added an entrance to this tower while he was ruling and Humayun was in exile.', "Qutb ud Din Aibak, founder of the Delhi Sultanate, started construction of the Qutb Minar's first storey around 1192. In 1220, Aibak's successor and son-in-law Shamsuddin Iltutmish completed a further three storeys. In 1369, a lightning strike destroyed the top storey. Firoz Shah Tughlaq replaced the damaged storey, and added one more. Sher Shah Suri also added an entrance to this tower while he was ruling and Humayun was in exile."]}}]}]