[April] met her husband [Douglas] when they were just 12 years old. [April] invited her father [George] to dinner.
('George', 'Douglas')
[April] invited her father [George] to dinner. [April] met her husband [Douglas] when they were just 12 years old.
[{('George', 'son-in-law', 'Douglas'): [('George', 'daughter', 'April'), ('April', 'husband', 'Douglas')]}]
['daughter', 'husband']