[Douglas] was adopted kid. He discovered last week that [Lillian] is his mother. [Douglas] bought flowers for his wife [April].
('April', 'Lillian')
[Douglas] bought flowers for his wife [April]. [Douglas] was adopted kid. He discovered last week that [Lillian] is his mother.
[{('April', 'mother-in-law', 'Lillian'): [('April', 'husband', 'Douglas'), ('Douglas', 'mother', 'Lillian')]}]
['husband', 'mother']