[Nicole] took her sister [Jennifer] out for dinner to celebrate her birthday. [Wayne] was sad to learn that his sister [Jennifer] was not going to make it to dinner like they had planned. [Dorothy] asked her sister [Beverly] if she could come over for dinner. [Beverly] told her she could n't, because she had to care for her sick son, [Wayne].
('Dorothy', 'Nicole')
[Dorothy] asked her sister [Beverly] if she could come over for dinner. [Beverly] told her she could n't, because she had to care for her sick son, [Wayne]. [Wayne] was sad to learn that his sister [Jennifer] was not going to make it to dinner like they had planned. [Nicole] took her sister [Jennifer] out for dinner to celebrate her birthday.
[{('Dorothy', 'niece', 'Nicole'): [('Dorothy', 'sister', 'Beverly'), ('Beverly', 'daughter', 'Nicole')]}, {('Beverly', 'daughter', 'Nicole'): [('Beverly', 'son', 'Wayne'), ('Wayne', 'sister', 'Nicole')]}, {('Wayne', 'sister', 'Nicole'): [('Wayne', 'sister', 'Jennifer'), ('Jennifer', 'sister', 'Nicole')]}]
['sister', 'son', 'sister', 'sister']