[Mary] told her daughter [Martha] to wash up. Dinner was ready. [Martha] was mad at her brother [Ernest], because [Ernest] had called her fat.
('Mary', 'Ernest')
[Mary] told her daughter [Martha] to wash up. Dinner was ready. [Martha] was mad at her brother [Ernest], because [Ernest] had called her fat.
[{('Mary', 'son', 'Ernest'): [('Mary', 'daughter', 'Martha'), ('Martha', 'brother', 'Ernest')]}]