[James] has a sister who has a son. The son is named [Louis]. [Jeffrey]'s sister, [Rebecca], bought movie tickets at a discount rate. [Dorothy] drove her son [Jeffrey] to his soccer game. [Rebecca] does n't like having to babysit her younger brother, [James].
('Dorothy', 'Louis')
[Dorothy] drove her son [Jeffrey] to his soccer game. [Jeffrey]'s sister, [Rebecca], bought movie tickets at a discount rate. [Rebecca] does n't like having to babysit her younger brother, [James]. [James] has a sister who has a son. The son is named [Louis].
[{('Dorothy', 'brother', 'Louis'): [('Dorothy', 'son', 'James'), ('James', 'uncle', 'Louis')]}, {('Dorothy', 'son', 'James'): [('Dorothy', 'son', 'Jeffrey'), ('Jeffrey', 'brother', 'James')]}, {('Jeffrey', 'brother', 'James'): [('Jeffrey', 'sister', 'Rebecca'), ('Rebecca', 'brother', 'James')]}]
['son', 'sister', 'brother', 'uncle']