[Lillian]'s daughter, [April], asked her mom to read her a story. [Douglas] went shopping with his wife [April].
('Lillian', 'Douglas')
[Lillian]'s daughter, [April], asked her mom to read her a story. [Douglas] went shopping with his wife [April].
[{('Lillian', 'son-in-law', 'Douglas'): [('Lillian', 'daughter', 'April'), ('April', 'husband', 'Douglas')]}]
['daughter', 'husband']