[Tracy] almost forgot to pick up her son [Aaron] from school. She quickly strapped her daughter [Laura] in her booster seat and rushed to go get him. [Harold] is the proud grandfather of [Kevin]. [Laura] has a brother named [Kevin], even though they have not seen each other for years.
('Aaron', 'Harold')
[Tracy] almost forgot to pick up her son [Aaron] from school. She quickly strapped her daughter [Laura] in her booster seat and rushed to go get him. [Harold] is the proud grandfather of [Kevin]. [Laura] has a brother named [Kevin], even though they have not seen each other for years.
[{('Aaron', 'grandfather', 'Harold'): [('Aaron', 'brother', 'Kevin'), ('Kevin', 'grandfather', 'Harold')]}, {('Aaron', 'brother', 'Kevin'): [('Aaron', 'mother', 'Tracy'), ('Tracy', 'son', 'Kevin')]}, {('Tracy', 'son', 'Kevin'): [('Tracy', 'daughter', 'Laura'), ('Laura', 'brother', 'Kevin')]}]
['mother', 'daughter', 'brother', 'grandfather']