[Beverly] is looking for a good gift for her sister [Marie]. [Michael] asked his mother [Beverly] to read to him. [Beverly] was too busy. [Tracy] and her sister [Marie] played golf together. [Tracy] won easily. [Harold] was busy planning a camping trip with his daughter [Tracy].
('Michael', 'Harold')
[Michael] asked his mother [Beverly] to read to him. [Beverly] was too busy. [Beverly] is looking for a good gift for her sister [Marie]. [Tracy] and her sister [Marie] played golf together. [Tracy] won easily. [Harold] was busy planning a camping trip with his daughter [Tracy].
[{('Michael', 'grandfather', 'Harold'): [('Michael', 'mother', 'Beverly'), ('Beverly', 'father', 'Harold')]}, {('Beverly', 'father', 'Harold'): [('Beverly', 'sister', 'Tracy'), ('Tracy', 'father', 'Harold')]}, {('Beverly', 'sister', 'Tracy'): [('Beverly', 'sister', 'Marie'), ('Marie', 'sister', 'Tracy')]}]
['mother', 'sister', 'sister', 'father']