[Samuel] played catch with his dad, [Louis] [Pedro] drove his daughter [Heather] to soccer practice. [Dorothy] and her daughter [Heather] are entering the competition together. [Pedro] tripped his brother [Louis] in the living room.
('Dorothy', 'Samuel')
[Dorothy] and her daughter [Heather] are entering the competition together. [Pedro] drove his daughter [Heather] to soccer practice. [Pedro] tripped his brother [Louis] in the living room. [Samuel] played catch with his dad, [Louis]
[{('Dorothy', 'nephew', 'Samuel'): [('Dorothy', 'brother', 'Louis'), ('Louis', 'son', 'Samuel')]}, {('Dorothy', 'brother', 'Louis'): [('Dorothy', 'daughter', 'Heather'), ('Heather', 'uncle', 'Louis')]}, {('Heather', 'uncle', 'Louis'): [('Heather', 'father', 'Pedro'), ('Pedro', 'brother', 'Louis')]}]
['daughter', 'father', 'brother', 'son']