The hostess called out [George]'s name and [Janet] told her father their table was ready. [George] took his son [Douglas] to soccer practice.
('Janet', 'Douglas')
The hostess called out [George]'s name and [Janet] told her father their table was ready. [George] took his son [Douglas] to soccer practice.
[{('Janet', 'brother', 'Douglas'): [('Janet', 'father', 'George'), ('George', 'son', 'Douglas')]}]
['father', 'son']