[Helen] is a woman with a sister named [Michelle]. [Michelle] looked all over the house for her son [Keith], but could n't find him. That's because [Keith] was outside in the back yard, playing baseball with his brother [Tom].
('Tom', 'Helen')
[Michelle] looked all over the house for her son [Keith], but could n't find him. That's because [Keith] was outside in the back yard, playing baseball with his brother [Tom]. [Helen] is a woman with a sister named [Michelle].
[{('Tom', 'aunt', 'Helen'): [('Tom', 'mother', 'Michelle'), ('Michelle', 'sister', 'Helen')]}, {('Tom', 'mother', 'Michelle'): [('Tom', 'brother', 'Keith'), ('Keith', 'mother', 'Michelle')]}]