[Harold]'s granddaughter [Heather] is coming over to visit him this afternoon. [Tracy], [Pedro], and [Louis] all went out for a family gathering at the bar. [Pedro] had to explain why [Heather] could n't go out with [Pedro]'s brother, [Louis].
('Louis', 'Harold')
[Tracy], [Pedro], and [Louis] all went out for a family gathering at the bar. [Pedro] had to explain why [Heather] could n't go out with [Pedro]'s brother, [Louis]. [Harold]'s granddaughter [Heather] is coming over to visit him this afternoon.
[{('Louis', 'father', 'Harold'): [('Louis', 'brother', 'Pedro'), ('Pedro', 'father', 'Harold')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'daughter', 'Heather'), ('Heather', 'grandfather', 'Harold')]}, {('Louis', 'brother', 'Pedro'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'brother', 'Pedro')]}]
['sister', 'brother', 'daughter', 'grandfather']