[Ronald] is a sibling of [Mario]. [Mario] invited his uncle [Antonio] to dinner [Harold] 'daughter, [Marie], just made it into grad school. [Marie] talks to her son [Ronald] every day.
('Harold', 'Antonio')
[Harold] 'daughter, [Marie], just made it into grad school. [Marie] talks to her son [Ronald] every day. [Ronald] is a sibling of [Mario]. [Mario] invited his uncle [Antonio] to dinner
[{('Harold', 'son', 'Antonio'): [('Harold', 'daughter', 'Marie'), ('Marie', 'brother', 'Antonio')]}, {('Marie', 'brother', 'Antonio'): [('Marie', 'son', 'Mario'), ('Mario', 'uncle', 'Antonio')]}, {('Marie', 'son', 'Mario'): [('Marie', 'son', 'Ronald'), ('Ronald', 'brother', 'Mario')]}]
['daughter', 'son', 'brother', 'uncle']