[Emma] did n't like her grandfather, [Harold], because he was mean to her. [Emma]'s sister [Erika] thought he was nice. [Tracy] and her daughter [Erika] went out to dinner. [Harold] was proud of his son, [Louis].
('Tracy', 'Louis')
[Tracy] and her daughter [Erika] went out to dinner. [Emma] did n't like her grandfather, [Harold], because he was mean to her. [Emma]'s sister [Erika] thought he was nice. [Harold] was proud of his son, [Louis].
[{('Tracy', 'brother', 'Louis'): [('Tracy', 'father', 'Harold'), ('Harold', 'son', 'Louis')]}, {('Tracy', 'father', 'Harold'): [('Tracy', 'daughter', 'Erika'), ('Erika', 'grandfather', 'Harold')]}, {('Erika', 'grandfather', 'Harold'): [('Erika', 'sister', 'Emma'), ('Emma', 'grandfather', 'Harold')]}]
['daughter', 'sister', 'grandfather', 'son']