[Marie] went to see her daughter, [Angelica], perform in her school play. [Marie]'s brother, [Antonio], joined her. [Angelica] loves hanging out with her uncle [Louis]. [Harold] went to pick up his son [Antonio] from the baseball practice.
('Harold', 'Louis')
[Harold] went to pick up his son [Antonio] from the baseball practice. [Marie] went to see her daughter, [Angelica], perform in her school play. [Marie]'s brother, [Antonio], joined her. [Angelica] loves hanging out with her uncle [Louis].
[{('Harold', 'son', 'Louis'): [('Harold', 'daughter', 'Marie'), ('Marie', 'brother', 'Louis')]}, {('Harold', 'daughter', 'Marie'): [('Harold', 'son', 'Antonio'), ('Antonio', 'sister', 'Marie')]}, {('Marie', 'brother', 'Louis'): [('Marie', 'daughter', 'Angelica'), ('Angelica', 'uncle', 'Louis')]}]
['son', 'sister', 'daughter', 'uncle']