[John]'s father has a sister named [Tracy]. [Jeffrey] has an aunt named [Marie]. [Marie] took her son [John] to school this morning because he missed the bus. [Dorothy] has a son named [Jeffrey].
('Dorothy', 'Tracy')
[Dorothy] has a son named [Jeffrey]. [Jeffrey] has an aunt named [Marie]. [Marie] took her son [John] to school this morning because he missed the bus. [John]'s father has a sister named [Tracy].
[{('Dorothy', 'sister', 'Tracy'): [('Dorothy', 'sister', 'Marie'), ('Marie', 'sister', 'Tracy')]}, {('Dorothy', 'sister', 'Marie'): [('Dorothy', 'son', 'Jeffrey'), ('Jeffrey', 'aunt', 'Marie')]}, {('Marie', 'sister', 'Tracy'): [('Marie', 'son', 'John'), ('John', 'aunt', 'Tracy')]}]
['son', 'aunt', 'son', 'aunt']