[John] and his sister [Lois] walked to the park. [John]'s son [Franklin] was already at the park skateboarding.
('Franklin', 'Lois')
[John] and his sister [Lois] walked to the park. [John]'s son [Franklin] was already at the park skateboarding.
[{('Franklin', 'aunt', 'Lois'): [('Franklin', 'father', 'John'), ('John', 'sister', 'Lois')]}]