[Lois] and her sister [Martha] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while. [Brent] and his mother [Martha] went to the animal shelter to adopt a cat.
('Brent', 'Lois')
[Brent] and his mother [Martha] went to the animal shelter to adopt a cat. [Lois] and her sister [Martha] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while.
[{('Brent', 'aunt', 'Lois'): [('Brent', 'mother', 'Martha'), ('Martha', 'sister', 'Lois')]}]