[Heidi] was cooking dinner for her husband [Jeff]. [Nancy] bought her son [Jeff] a basketball for his birthday.
('Heidi', 'Nancy')
[Heidi] was cooking dinner for her husband [Jeff]. [Nancy] bought her son [Jeff] a basketball for his birthday.
[{('Heidi', 'mother-in-law', 'Nancy'): [('Heidi', 'husband', 'Jeff'), ('Jeff', 'mother', 'Nancy')]}]
['husband', 'mother']