[Latisha]'s son, [Rich], played with the cake dough while [Latisha]'s daughter, [Helen], mixed together ingredients. [Rich] bought a book for his son [Tom].
('Tom', 'Helen')
[Rich] bought a book for his son [Tom]. [Latisha]'s son, [Rich], played with the cake dough while [Latisha]'s daughter, [Helen], mixed together ingredients.
[{('Tom', 'aunt', 'Helen'): [('Tom', 'father', 'Rich'), ('Rich', 'sister', 'Helen')]}, {('Rich', 'sister', 'Helen'): [('Rich', 'mother', 'Latisha'), ('Latisha', 'daughter', 'Helen')]}]