How many studio albums does Polo G have released?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q5', 'id': 0, 'label': 'human'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q201', 'id': 1, 'label': '3'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q62953486', 'id': 2, 'label': 'Polo G'}, {'type': 'INTERNAL', 'name_': 'Q115647497', 'id': 3, 'label': 'Destiny Amaka'}], 'links': [{'name_': 'P31', 'source': 2, 'target': 0, 'label': 'instance of'}, {'name_': 'P31', 'source': 3, 'target': 0, 'label': 'instance of'}, {'name_': 'P3373', 'source': 3, 'target': 1, 'label': 'sibling'}]}