[Paul] loves his mother [Beverly] very much. [Beverly] loves her brother [Robert]. [Paul]'s father's name is [Louis]. [Harold] went to the baseball game with his son [Louis]
('Harold', 'Robert')
[Harold] went to the baseball game with his son [Louis] [Paul]'s father's name is [Louis]. [Paul] loves his mother [Beverly] very much. [Beverly] loves her brother [Robert].
[{('Harold', 'son', 'Robert'): [('Harold', 'son', 'Louis'), ('Louis', 'brother', 'Robert')]}, {('Louis', 'brother', 'Robert'): [('Louis', 'son', 'Paul'), ('Paul', 'uncle', 'Robert')]}, {('Paul', 'uncle', 'Robert'): [('Paul', 'mother', 'Beverly'), ('Beverly', 'brother', 'Robert')]}]
['son', 'son', 'mother', 'brother']