[Pedro] took his daughter [Heather] to the bookstore, and bought her some books from her favorite author. [Louis]'s brother [Antonio] missed the bus and was late for school so, [Louis]'s sister [Marie] decided to drop him off. [Heather] went over to her uncle [Antonio]'s house for dinner. [Antonio] was a gourmet cook, and tonight he made a delicious crown of lamb.
('Pedro', 'Marie')
[Pedro] took his daughter [Heather] to the bookstore, and bought her some books from her favorite author. [Heather] went over to her uncle [Antonio]'s house for dinner. [Antonio] was a gourmet cook, and tonight he made a delicious crown of lamb. [Louis]'s brother [Antonio] missed the bus and was late for school so, [Louis]'s sister [Marie] decided to drop him off.
[{('Pedro', 'sister', 'Marie'): [('Pedro', 'brother', 'Antonio'), ('Antonio', 'sister', 'Marie')]}, {('Antonio', 'sister', 'Marie'): [('Antonio', 'brother', 'Louis'), ('Louis', 'sister', 'Marie')]}, {('Pedro', 'brother', 'Antonio'): [('Pedro', 'daughter', 'Heather'), ('Heather', 'uncle', 'Antonio')]}]
['daughter', 'uncle', 'brother', 'sister']