[Andrea] and her husband [John] went shopping for Christmas presents one afternoon at the local mall. [Lillian] visited her son [John] at college.
('Lillian', 'Andrea')
[Lillian] visited her son [John] at college. [Andrea] and her husband [John] went shopping for Christmas presents one afternoon at the local mall.
[{('Lillian', 'daughter-in-law', 'Andrea'): [('Lillian', 'son', 'John'), ('John', 'wife', 'Andrea')]}]
['son', 'wife']