[Pedro] took his son [Jeffrey] out for ice cream. [Pedro]'s son [James], was still in school. [Rebecca] loved her mother [Dorothy]. She was heartbroken when she heard [Dorothy] had suddenly passed away. [Rebecca] could n't wait for the surprise birthday party that she was throwing for her brother [Jeffrey] next weekend.
('James', 'Dorothy')
[Pedro] took his son [Jeffrey] out for ice cream. [Pedro]'s son [James], was still in school. [Rebecca] could n't wait for the surprise birthday party that she was throwing for her brother [Jeffrey] next weekend. [Rebecca] loved her mother [Dorothy]. She was heartbroken when she heard [Dorothy] had suddenly passed away.
[{('James', 'mother', 'Dorothy'): [('James', 'brother', 'Jeffrey'), ('Jeffrey', 'mother', 'Dorothy')]}, {('James', 'brother', 'Jeffrey'): [('James', 'father', 'Pedro'), ('Pedro', 'son', 'Jeffrey')]}, {('Jeffrey', 'mother', 'Dorothy'): [('Jeffrey', 'sister', 'Rebecca'), ('Rebecca', 'mother', 'Dorothy')]}]
['father', 'son', 'sister', 'mother']