[Tracy] asked her two sisters [Beverly] and [Dorothy] if they were free for coffee this coming weekend. [Louis] was enjoying dinner with his wife [Beverly]. [Louis]'s daughter [Jennifer] was n't hungry at the time.
('Dorothy', 'Jennifer')
[Tracy] asked her two sisters [Beverly] and [Dorothy] if they were free for coffee this coming weekend. [Louis] was enjoying dinner with his wife [Beverly]. [Louis]'s daughter [Jennifer] was n't hungry at the time.
[{('Dorothy', 'niece', 'Jennifer'): [('Dorothy', 'sister', 'Beverly'), ('Beverly', 'daughter', 'Jennifer')]}, {('Beverly', 'daughter', 'Jennifer'): [('Beverly', 'husband', 'Louis'), ('Louis', 'daughter', 'Jennifer')]}, {('Dorothy', 'sister', 'Beverly'): [('Dorothy', 'sister', 'Tracy'), ('Tracy', 'sister', 'Beverly')]}]
['sister', 'sister', 'husband', 'daughter']