[Dorothy] went out for pizza with her father [Harold]. [Karen] took her younger sister [Nicole] to the carnival last weekend. [Beverly] asked her mother [Karen] to get a cake for her sister [Dorothy] on her way back home.
('Nicole', 'Harold')
[Karen] took her younger sister [Nicole] to the carnival last weekend. [Beverly] asked her mother [Karen] to get a cake for her sister [Dorothy] on her way back home. [Dorothy] went out for pizza with her father [Harold].
[{('Nicole', 'grandfather', 'Harold'): [('Nicole', 'mother', 'Beverly'), ('Beverly', 'father', 'Harold')]}, {('Nicole', 'mother', 'Beverly'): [('Nicole', 'sister', 'Karen'), ('Karen', 'mother', 'Beverly')]}, {('Beverly', 'father', 'Harold'): [('Beverly', 'sister', 'Dorothy'), ('Dorothy', 'father', 'Harold')]}]
['sister', 'mother', 'sister', 'father']