[Louis] and his sister [Marie] got their mother [Marie] a new computer for her birthday. She really liked it. [Antonio] hit his brother [Robert] in the head. [Angelica] was playing tag with her father [Robert]. [Marie] told her daughter [Angelica] to wash up. Dinner was ready.
('Louis', 'Antonio')
[Louis] and his sister [Marie] got their mother [Marie] a new computer for her birthday. She really liked it. [Marie] told her daughter [Angelica] to wash up. Dinner was ready. [Angelica] was playing tag with her father [Robert]. [Antonio] hit his brother [Robert] in the head.
[{('Louis', 'brother', 'Antonio'): [('Louis', 'sister', 'Marie'), ('Marie', 'brother', 'Antonio')]}, {('Marie', 'brother', 'Antonio'): [('Marie', 'daughter', 'Angelica'), ('Angelica', 'uncle', 'Antonio')]}, {('Angelica', 'uncle', 'Antonio'): [('Angelica', 'father', 'Robert'), ('Robert', 'brother', 'Antonio')]}]
['sister', 'daughter', 'father', 'brother']