[Louis] and [Beverly] took their son [Samuel] to go play baseball in the park with [Beverly]'s father [Harold]. [Harold] and his daughter, [Marie] had tea.
('Marie', 'Samuel')
[Harold] and his daughter, [Marie] had tea. [Louis] and [Beverly] took their son [Samuel] to go play baseball in the park with [Beverly]'s father [Harold].
[{('Marie', 'nephew', 'Samuel'): [('Marie', 'sister', 'Beverly'), ('Beverly', 'son', 'Samuel')]}, {('Marie', 'sister', 'Beverly'): [('Marie', 'father', 'Harold'), ('Harold', 'daughter', 'Beverly')]}, {('Beverly', 'son', 'Samuel'): [('Beverly', 'husband', 'Louis'), ('Louis', 'son', 'Samuel')]}]
['father', 'daughter', 'husband', 'son']