[Antonio] went bowling with his wife [Tracy] and his daughter [Laura]. [Laura] was sad her grandfather [Harold] could n't join them. [Tracy] picked up her son [Kevin] from the mall
('Kevin', 'Harold')
[Tracy] picked up her son [Kevin] from the mall [Antonio] went bowling with his wife [Tracy] and his daughter [Laura]. [Laura] was sad her grandfather [Harold] could n't join them.
[{('Kevin', 'grandfather', 'Harold'): [('Kevin', 'mother', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Tracy', 'father', 'Harold'): [('Tracy', 'daughter', 'Laura'), ('Laura', 'grandfather', 'Harold')]}, {('Tracy', 'daughter', 'Laura'): [('Tracy', 'husband', 'Antonio'), ('Antonio', 'daughter', 'Laura')]}]
['mother', 'husband', 'daughter', 'grandfather']