[Tracy] took her son [Kevin] shopping for new school clothes. They had a good time. [Marie] went out for pizza with her father [Harold]. [Beverly] and her sister [Tracy] are the only children in their family. [Marie]'s sister, [Beverly], recently started acting.
('Kevin', 'Harold')
[Tracy] took her son [Kevin] shopping for new school clothes. They had a good time. [Beverly] and her sister [Tracy] are the only children in their family. [Marie]'s sister, [Beverly], recently started acting. [Marie] went out for pizza with her father [Harold].
[{('Kevin', 'grandfather', 'Harold'): [('Kevin', 'mother', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Tracy', 'father', 'Harold'): [('Tracy', 'sister', 'Beverly'), ('Beverly', 'father', 'Harold')]}, {('Beverly', 'father', 'Harold'): [('Beverly', 'sister', 'Marie'), ('Marie', 'father', 'Harold')]}]
['mother', 'sister', 'sister', 'father']