Who designed the Taj Mahal?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q41176', 'id': 0, 'label': 'building'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q9141', 'id': 1, 'label': 'Taj Mahal'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1501585', 'id': 2, 'label': 'architecture of Iran'}, {'type': 'INTERNAL', 'name_': 'Q29828458', 'id': 3, 'label': 'chahartaq'}], 'links': [{'name_': 'P5869', 'source': 0, 'target': 1, 'label': 'model item'}, {'name_': 'P279', 'source': 3, 'target': 0, 'label': 'subclass of'}, {'name_': 'P149', 'source': 3, 'target': 2, 'label': 'architectural style'}]}