[Kevin] was waiting to meet his wife, [Linda], at the airport whose flight was delayed by two hours. [Linda] took her father [Wayne] out to dinner for Father's Day.
('Kevin', 'Wayne')
[Kevin] was waiting to meet his wife, [Linda], at the airport whose flight was delayed by two hours. [Linda] took her father [Wayne] out to dinner for Father's Day.
[{('Kevin', 'father-in-law', 'Wayne'): [('Kevin', 'wife', 'Linda'), ('Linda', 'father', 'Wayne')]}]
['wife', 'father']