[Claudia] and her sister [Amalia] played golf together. [Claudia] won easily. [Amalia] and her sister [Kevin] went to the ice cream shop. [Lionel] and his sister [Claudia] stood in line at the fair.
('Kevin', 'Lionel')
[Amalia] and her sister [Kevin] went to the ice cream shop. [Claudia] and her sister [Amalia] played golf together. [Claudia] won easily. [Lionel] and his sister [Claudia] stood in line at the fair.
[{('Kevin', 'brother', 'Lionel'): [('Kevin', 'sister', 'Claudia'), ('Claudia', 'brother', 'Lionel')]}, {('Kevin', 'sister', 'Claudia'): [('Kevin', 'sister', 'Amalia'), ('Amalia', 'sister', 'Claudia')]}]