[Jeff]'s wife, [Heidi] was hungry, so [Jeff] cooked her her favorite meal. [Heidi] loved her mother [Nancy]. She was heartbroken when she heard [Nancy] had suddenly passed away.
('Jeff', 'Nancy')
[Jeff]'s wife, [Heidi] was hungry, so [Jeff] cooked her her favorite meal. [Heidi] loved her mother [Nancy]. She was heartbroken when she heard [Nancy] had suddenly passed away.
[{('Jeff', 'mother-in-law', 'Nancy'): [('Jeff', 'wife', 'Heidi'), ('Heidi', 'mother', 'Nancy')]}]
['wife', 'mother']