[Harold] 'daughter, [Tracy], just made it into grad school. [Erika] gave her Aunt [Marie] a kiss. [Tracy] wanted her daughter, [Laura], to go shopping with her. [Laura] invited her sister, [Erika].
('Harold', 'Marie')
[Harold] 'daughter, [Tracy], just made it into grad school. [Tracy] wanted her daughter, [Laura], to go shopping with her. [Laura] invited her sister, [Erika]. [Erika] gave her Aunt [Marie] a kiss.
[{('Harold', 'daughter', 'Marie'): [('Harold', 'daughter', 'Tracy'), ('Tracy', 'sister', 'Marie')]}, {('Tracy', 'sister', 'Marie'): [('Tracy', 'daughter', 'Erika'), ('Erika', 'aunt', 'Marie')]}, {('Tracy', 'daughter', 'Erika'): [('Tracy', 'daughter', 'Laura'), ('Laura', 'sister', 'Erika')]}]
['daughter', 'daughter', 'sister', 'aunt']