[Robert] was carving a turkey with his brother [Pedro] and sister [Tracy]. [Robert]'s daughter [Angelica] felt bad for the turkey. [Angelica]'s uncle [Antonio] was looking forward to visiting for the summer.
('Pedro', 'Antonio')
[Robert] was carving a turkey with his brother [Pedro] and sister [Tracy]. [Robert]'s daughter [Angelica] felt bad for the turkey. [Angelica]'s uncle [Antonio] was looking forward to visiting for the summer.
[{('Pedro', 'brother', 'Antonio'): [('Pedro', 'brother', 'Robert'), ('Robert', 'brother', 'Antonio')]}, {('Pedro', 'brother', 'Robert'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'brother', 'Robert')]}, {('Robert', 'brother', 'Antonio'): [('Robert', 'daughter', 'Angelica'), ('Angelica', 'uncle', 'Antonio')]}]
['sister', 'brother', 'daughter', 'uncle']