[Marie] reprimanded her son [Ronald] for biting his sister [Angelica]. [Angelica] was playing tag with her father [Robert]. [Allan]'s mother [Marie] was present at the thanksgiving service.
('Allan', 'Robert')
[Allan]'s mother [Marie] was present at the thanksgiving service. [Marie] reprimanded her son [Ronald] for biting his sister [Angelica]. [Angelica] was playing tag with her father [Robert].
[{('Allan', 'father', 'Robert'): [('Allan', 'brother', 'Ronald'), ('Ronald', 'father', 'Robert')]}, {('Ronald', 'father', 'Robert'): [('Ronald', 'sister', 'Angelica'), ('Angelica', 'father', 'Robert')]}, {('Allan', 'brother', 'Ronald'): [('Allan', 'mother', 'Marie'), ('Marie', 'son', 'Ronald')]}]
['mother', 'son', 'sister', 'father']