[Robert]'s son [Mario] and [Mario]'s grandmother [Shantel] are playing cards. [Pedro] and his brother [Robert] went to the boxing match. [Beverly] was upset her brother [Pedro] did n't invite her.
('Beverly', 'Shantel')
[Pedro] and his brother [Robert] went to the boxing match. [Beverly] was upset her brother [Pedro] did n't invite her. [Robert]'s son [Mario] and [Mario]'s grandmother [Shantel] are playing cards.
[{('Beverly', 'mother', 'Shantel'): [('Beverly', 'brother', 'Pedro'), ('Pedro', 'mother', 'Shantel')]}, {('Pedro', 'mother', 'Shantel'): [('Pedro', 'brother', 'Robert'), ('Robert', 'mother', 'Shantel')]}, {('Robert', 'mother', 'Shantel'): [('Robert', 'son', 'Mario'), ('Mario', 'grandmother', 'Shantel')]}]
['brother', 'brother', 'son', 'grandmother']