[Mary] loved to play dress-up with her daughter [Martha]. [Martha] was unhappy with her son, [Brent], and his grades. She enlisted a tutor to help him.
('Mary', 'Brent')
[Mary] loved to play dress-up with her daughter [Martha]. [Martha] was unhappy with her son, [Brent], and his grades. She enlisted a tutor to help him.
[{('Mary', 'grandson', 'Brent'): [('Mary', 'daughter', 'Martha'), ('Martha', 'son', 'Brent')]}]