[Pedro] and his wife [Dorothy] took their daughter [Rebecca] to the zoo. [Rebecca]'s sister [Annie] does n't like animals and did n't go. [Annie] and her husband [Jeffrey] watched the fireworks by the lake last night.
('Dorothy', 'Jeffrey')
[Pedro] and his wife [Dorothy] took their daughter [Rebecca] to the zoo. [Rebecca]'s sister [Annie] does n't like animals and did n't go. [Annie] and her husband [Jeffrey] watched the fireworks by the lake last night.
[{('Dorothy', 'son-in-law', 'Jeffrey'): [('Dorothy', 'daughter', 'Annie'), ('Annie', 'husband', 'Jeffrey')]}, {('Dorothy', 'daughter', 'Annie'): [('Dorothy', 'daughter', 'Rebecca'), ('Rebecca', 'sister', 'Annie')]}, {('Rebecca', 'sister', 'Annie'): [('Rebecca', 'father', 'Pedro'), ('Pedro', 'daughter', 'Annie')]}]
['daughter', 'father', 'daughter', 'husband']