[Tracy] and her husband, [Antonio], were cooking meatloaf. [Bernardo], [Antonio]'s son, was hungry, and asked them when it would be done. [Beverly] and her brother [Pedro] were having a wonderful time at Disneyland. [Pedro] and his sister [Tracy] were hoping for a snow day.
('Beverly', 'Bernardo')
[Beverly] and her brother [Pedro] were having a wonderful time at Disneyland. [Pedro] and his sister [Tracy] were hoping for a snow day. [Tracy] and her husband, [Antonio], were cooking meatloaf. [Bernardo], [Antonio]'s son, was hungry, and asked them when it would be done.
[{('Beverly', 'nephew', 'Bernardo'): [('Beverly', 'sister', 'Tracy'), ('Tracy', 'son', 'Bernardo')]}, {('Tracy', 'son', 'Bernardo'): [('Tracy', 'husband', 'Antonio'), ('Antonio', 'son', 'Bernardo')]}, {('Beverly', 'sister', 'Tracy'): [('Beverly', 'brother', 'Pedro'), ('Pedro', 'sister', 'Tracy')]}]
['brother', 'sister', 'husband', 'son']