Which Harry Potter character is a Slytherin student in Harry's year and a member of Dolores Umbridge's Inquisitorial Squad?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6581097', 'id': 0, 'label': 'male'}, {'type': 'INTERNAL', 'name_': 'Q6581072', 'id': 1, 'label': 'female'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q8337', 'id': 2, 'label': 'Harry Potter'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q3244512', 'id': 3, 'label': 'Harry Potter'}, {'type': 'INTERNAL', 'name_': 'Q179641', 'id': 4, 'label': 'Draco Malfoy'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q3185264', 'id': 5, 'label': 'Slytherin'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q716941', 'id': 6, 'label': 'Dolores Umbridge'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q3317229', 'id': 7, 'label': 'Inquisitorial Squad'}], 'links': [{'name_': 'P461', 'source': 0, 'target': 1, 'label': 'opposite of'}, {'name_': 'P461', 'source': 1, 'target': 0, 'label': 'opposite of'}, {'name_': 'P674', 'source': 2, 'target': 3, 'label': 'characters'}, {'name_': 'P21', 'source': 4, 'target': 0, 'label': 'sex or gender'}, {'name_': 'P1441', 'source': 4, 'target': 2, 'label': 'present in work'}, {'name_': 'P7047', 'source': 4, 'target': 3, 'label': 'enemy'}, {'name_': 'P463', 'source': 4, 'target': 5, 'label': 'member of'}, {'name_': 'P463', 'source': 4, 'target': 7, 'label': 'member of'}, {'name_': 'P1441', 'source': 5, 'target': 2, 'label': 'present in work'}, {'name_': 'P21', 'source': 6, 'target': 1, 'label': 'sex or gender'}, {'name_': 'P1441', 'source': 6, 'target': 2, 'label': 'present in work'}, {'name_': 'P1441', 'source': 7, 'target': 2, 'label': 'present in work'}, {'name_': 'P112', 'source': 7, 'target': 6, 'label': 'founded by'}]}