[Michael]'s mother, [Beverly], was worried about him. He had n't been eating. [Beverly] was unhappy with her son, [Wayne], and his grades. She enlisted a tutor to help him. [Wayne]'s father, [Louis], took his son to the movies. [Robert], [Louis]'s brother, met them there.
('Michael', 'Robert')
[Michael]'s mother, [Beverly], was worried about him. He had n't been eating. [Beverly] was unhappy with her son, [Wayne], and his grades. She enlisted a tutor to help him. [Wayne]'s father, [Louis], took his son to the movies. [Robert], [Louis]'s brother, met them there.
[{('Michael', 'uncle', 'Robert'): [('Michael', 'mother', 'Beverly'), ('Beverly', 'brother', 'Robert')]}, {('Beverly', 'brother', 'Robert'): [('Beverly', 'son', 'Wayne'), ('Wayne', 'uncle', 'Robert')]}, {('Wayne', 'uncle', 'Robert'): [('Wayne', 'father', 'Louis'), ('Louis', 'brother', 'Robert')]}]
['mother', 'son', 'father', 'brother']