[Robert]'s son, [Ronald] and his sister [Angelica] went out to eat. [Robert]'s wife, [Marie], was n't feeling well and stayed home. [Angelica] took her uncle [Antonio] to the grocery store.
('Marie', 'Antonio')
[Robert]'s son, [Ronald] and his sister [Angelica] went out to eat. [Robert]'s wife, [Marie], was n't feeling well and stayed home. [Angelica] took her uncle [Antonio] to the grocery store.
[{('Marie', 'brother', 'Antonio'): [('Marie', 'daughter', 'Angelica'), ('Angelica', 'uncle', 'Antonio')]}, {('Marie', 'daughter', 'Angelica'): [('Marie', 'husband', 'Robert'), ('Robert', 'daughter', 'Angelica')]}, {('Robert', 'daughter', 'Angelica'): [('Robert', 'son', 'Ronald'), ('Ronald', 'sister', 'Angelica')]}]
['husband', 'son', 'sister', 'uncle']