[Cheryl] is looking for a good gift for her sister [Rebecca]. [Pedro] and his brother [Robert] fight a lot. Despite this, they still love each other very much. [Pedro] loves his wife [Dorothy]. [Cheryl] is so happy to have [Dorothy] for a mother.
('Robert', 'Rebecca')
[Pedro] and his brother [Robert] fight a lot. Despite this, they still love each other very much. [Pedro] loves his wife [Dorothy]. [Cheryl] is so happy to have [Dorothy] for a mother. [Cheryl] is looking for a good gift for her sister [Rebecca].
[{('Robert', 'niece', 'Rebecca'): [('Robert', 'brother', 'Pedro'), ('Pedro', 'daughter', 'Rebecca')]}, {('Pedro', 'daughter', 'Rebecca'): [('Pedro', 'daughter', 'Cheryl'), ('Cheryl', 'sister', 'Rebecca')]}, {('Pedro', 'daughter', 'Cheryl'): [('Pedro', 'wife', 'Dorothy'), ('Dorothy', 'daughter', 'Cheryl')]}]
['brother', 'wife', 'daughter', 'sister']