[Roberto] has a brother who is younger than him. The brother has a sister whose name is [Rebecca]. [Dorothy] and her brother [Louis] always argue about politics. [Dorothy]'s daughter [Rebecca] thinks it is funny. [Roberto] and his brother [Jeffrey] went to see a baseball game on Friday and had a great time.
('Jeffrey', 'Louis')
[Roberto] and his brother [Jeffrey] went to see a baseball game on Friday and had a great time. [Roberto] has a brother who is younger than him. The brother has a sister whose name is [Rebecca]. [Dorothy] and her brother [Louis] always argue about politics. [Dorothy]'s daughter [Rebecca] thinks it is funny.
[{('Jeffrey', 'uncle', 'Louis'): [('Jeffrey', 'mother', 'Dorothy'), ('Dorothy', 'brother', 'Louis')]}, {('Jeffrey', 'mother', 'Dorothy'): [('Jeffrey', 'sister', 'Rebecca'), ('Rebecca', 'mother', 'Dorothy')]}, {('Jeffrey', 'sister', 'Rebecca'): [('Jeffrey', 'brother', 'Roberto'), ('Roberto', 'sister', 'Rebecca')]}]
['brother', 'sister', 'mother', 'brother']