[Harold]'s son [Robert] entered rehab for the ninth time at the age of thirty. [Robert] took the kids to a babysitter so he could have a great date with his wife, [Marie]. [Marie] wanted her daughter, [Michelle], to go shopping with her. [Michelle] invited her sister, [Elsie].
('Harold', 'Elsie')
[Harold]'s son [Robert] entered rehab for the ninth time at the age of thirty. [Robert] took the kids to a babysitter so he could have a great date with his wife, [Marie]. [Marie] wanted her daughter, [Michelle], to go shopping with her. [Michelle] invited her sister, [Elsie].
[{('Harold', 'granddaughter', 'Elsie'): [('Harold', 'granddaughter', 'Michelle'), ('Michelle', 'sister', 'Elsie')]}, {('Harold', 'granddaughter', 'Michelle'): [('Harold', 'son', 'Robert'), ('Robert', 'daughter', 'Michelle')]}, {('Robert', 'daughter', 'Michelle'): [('Robert', 'wife', 'Marie'), ('Marie', 'daughter', 'Michelle')]}]
['son', 'wife', 'daughter', 'sister']