[Pedro], his sister [Tracy], and his daughter [Annie] all met up at the mall. [Tracy]'s father, [Harold], met up with them for lunch at the food court. [Annie] was talking about food with her sister [Heather].
('Harold', 'Heather')
[Pedro], his sister [Tracy], and his daughter [Annie] all met up at the mall. [Tracy]'s father, [Harold], met up with them for lunch at the food court. [Annie] was talking about food with her sister [Heather].
[{('Harold', 'granddaughter', 'Heather'): [('Harold', 'granddaughter', 'Annie'), ('Annie', 'sister', 'Heather')]}, {('Harold', 'granddaughter', 'Annie'): [('Harold', 'son', 'Pedro'), ('Pedro', 'daughter', 'Annie')]}, {('Harold', 'son', 'Pedro'): [('Harold', 'daughter', 'Tracy'), ('Tracy', 'brother', 'Pedro')]}]
['daughter', 'brother', 'daughter', 'sister']