[Louis] and his son [Samuel] went to the park to look for different kinds of birds. [Louis] took his daughter [Karen] to the bookstore, and bought her some books from her favorite author. [Harold] drove his daughter [Tracy] to soccer practice. [Tracy]'s niece [Karen] was a massive fan of Pokemon.
('Samuel', 'Harold')
[Louis] and his son [Samuel] went to the park to look for different kinds of birds. [Louis] took his daughter [Karen] to the bookstore, and bought her some books from her favorite author. [Tracy]'s niece [Karen] was a massive fan of Pokemon. [Harold] drove his daughter [Tracy] to soccer practice.
[{('Samuel', 'grandfather', 'Harold'): [('Samuel', 'father', 'Louis'), ('Louis', 'father', 'Harold')]}, {('Louis', 'father', 'Harold'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Louis', 'sister', 'Tracy'): [('Louis', 'daughter', 'Karen'), ('Karen', 'aunt', 'Tracy')]}]
['father', 'daughter', 'aunt', 'father']