[Laura]'s grandfather [Harold] took her and her sister [Erika] out to dinner. [Antonio] took his son, [Kevin] to the movies with [Erika], who's father is [Antonio].
('Harold', 'Kevin')
[Laura]'s grandfather [Harold] took her and her sister [Erika] out to dinner. [Antonio] took his son, [Kevin] to the movies with [Erika], who's father is [Antonio].
[{('Harold', 'grandson', 'Kevin'): [('Harold', 'granddaughter', 'Erika'), ('Erika', 'brother', 'Kevin')]}, {('Harold', 'granddaughter', 'Erika'): [('Harold', 'granddaughter', 'Laura'), ('Laura', 'sister', 'Erika')]}, {('Erika', 'brother', 'Kevin'): [('Erika', 'father', 'Antonio'), ('Antonio', 'son', 'Kevin')]}]
['granddaughter', 'sister', 'father', 'son']