[Mario] and his sister [Angelica] got their mother [Angelica] a new computer for her birthday. She really liked it. [Mario] and his brother [Ronald] are fighting again. [Robert] bought a lovely bouquet of flowers for his wife, [Marie]. They were mostly roses, which are her favorite flower. [Marie] was unhappy with her son, [Ronald], and his grades. She enlisted a tutor to help him.
('Robert', 'Angelica')
[Robert] bought a lovely bouquet of flowers for his wife, [Marie]. They were mostly roses, which are her favorite flower. [Marie] was unhappy with her son, [Ronald], and his grades. She enlisted a tutor to help him. [Mario] and his brother [Ronald] are fighting again. [Mario] and his sister [Angelica] got their mother [Angelica] a new computer for her birthday. She really liked it.
[{('Robert', 'daughter', 'Angelica'): [('Robert', 'son', 'Mario'), ('Mario', 'sister', 'Angelica')]}, {('Robert', 'son', 'Mario'): [('Robert', 'son', 'Ronald'), ('Ronald', 'brother', 'Mario')]}, {('Robert', 'son', 'Ronald'): [('Robert', 'wife', 'Marie'), ('Marie', 'son', 'Ronald')]}]
['wife', 'son', 'brother', 'sister']