[Tracy] gave her brother [Robert] a new sweater for Christmas. [Louis] was having an argument with her sister, [Tracy]. [Dorothy] gave her brother [Louis] a new sweater for Christmas. [Michelle]'s father, [Robert], took her to school this morning.
('Dorothy', 'Michelle')
[Dorothy] gave her brother [Louis] a new sweater for Christmas. [Louis] was having an argument with her sister, [Tracy]. [Tracy] gave her brother [Robert] a new sweater for Christmas. [Michelle]'s father, [Robert], took her to school this morning.
[{('Dorothy', 'niece', 'Michelle'): [('Dorothy', 'brother', 'Robert'), ('Robert', 'daughter', 'Michelle')]}, {('Dorothy', 'brother', 'Robert'): [('Dorothy', 'brother', 'Louis'), ('Louis', 'brother', 'Robert')]}, {('Louis', 'brother', 'Robert'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'brother', 'Robert')]}]
['brother', 'sister', 'brother', 'daughter']