Who led the league in rebounds for the 2019 through 2020 NBA season?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q16', 'id': 0, 'label': 'Canada'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q155223', 'id': 1, 'label': 'National Basketball Association'}, {'type': 'INTERNAL', 'name_': 'Q4758911', 'id': 2, 'label': 'Andrew Wiggins'}], 'links': [{'name_': 'P27', 'source': 2, 'target': 0, 'label': 'country of citizenship'}, {'name_': 'P118', 'source': 2, 'target': 1, 'label': 'league'}]}