Who was the second daughter of King Christian IX of Denmark?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q6581097', 'id': 0, 'label': 'male'}, {'type': 'INTERNAL', 'name_': 'Q5', 'id': 1, 'label': 'human'}, {'type': 'INTERNAL', 'name_': 'Q234257', 'id': 2, 'label': 'Catherine Pavlovna of Russia'}, {'type': 'INTERNAL', 'name_': 'Q72575', 'id': 3, 'label': 'Duke William Frederick Philip of Württemberg'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q57632', 'id': 4, 'label': 'Maria Feodorovna'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q151305', 'id': 5, 'label': 'Christian IX of Denmark'}], 'links': [{'name_': 'P31', 'source': 2, 'target': 1, 'label': 'instance of'}, {'name_': 'P25', 'source': 2, 'target': 4, 'label': 'mother'}, {'name_': 'P21', 'source': 3, 'target': 0, 'label': 'sex or gender'}, {'name_': 'P31', 'source': 3, 'target': 1, 'label': 'instance of'}, {'name_': 'P3373', 'source': 3, 'target': 4, 'label': 'sibling'}, {'name_': 'P21', 'source': 5, 'target': 0, 'label': 'sex or gender'}, {'name_': 'P31', 'source': 5, 'target': 1, 'label': 'instance of'}]}