[Bobby] who is [Tracy]'s son made the basketball team. [Shantel] who is the grandmother of [Bobby] will attend the game. [Pedro]'s sister, [Tracy], participated in the dance contest. [Pedro] wanted to spend his day off at a museum, so his wife [Dorothy] did some research on the best museums nearby.
('Dorothy', 'Shantel')
[Pedro] wanted to spend his day off at a museum, so his wife [Dorothy] did some research on the best museums nearby. [Pedro]'s sister, [Tracy], participated in the dance contest. [Bobby] who is [Tracy]'s son made the basketball team. [Shantel] who is the grandmother of [Bobby] will attend the game.
[{('Dorothy', 'mother-in-law', 'Shantel'): [('Dorothy', 'husband', 'Pedro'), ('Pedro', 'mother', 'Shantel')]}, {('Pedro', 'mother', 'Shantel'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'mother', 'Shantel')]}, {('Tracy', 'mother', 'Shantel'): [('Tracy', 'son', 'Bobby'), ('Bobby', 'grandmother', 'Shantel')]}]
['husband', 'sister', 'son', 'grandmother']