[Louis] and his brother [Robert] were rarely seen apart. [Ronald] loves playing hide and seek with his grandfather [Harold]. [Robert] went on a roadtrip with his youngest child, [Ronald]. [Karen] is so proud that [Louis], his father, quit smoking.
('Karen', 'Harold')
[Karen] is so proud that [Louis], his father, quit smoking. [Louis] and his brother [Robert] were rarely seen apart. [Robert] went on a roadtrip with his youngest child, [Ronald]. [Ronald] loves playing hide and seek with his grandfather [Harold].
[{('Karen', 'grandfather', 'Harold'): [('Karen', 'father', 'Louis'), ('Louis', 'father', 'Harold')]}, {('Louis', 'father', 'Harold'): [('Louis', 'brother', 'Robert'), ('Robert', 'father', 'Harold')]}, {('Robert', 'father', 'Harold'): [('Robert', 'son', 'Ronald'), ('Ronald', 'grandfather', 'Harold')]}]
['father', 'brother', 'son', 'grandfather']