[Bobby]'s father, [Hugh], bought him some ice cream. [Hugh] helped his brother, [Wesley], study for the chemistry exam. [Wesley] was enjoying the delicious meal prepared by his mother [Frances].
('Bobby', 'Frances')
[Bobby]'s father, [Hugh], bought him some ice cream. [Hugh] helped his brother, [Wesley], study for the chemistry exam. [Wesley] was enjoying the delicious meal prepared by his mother [Frances].
[{('Bobby', 'grandmother', 'Frances'): [('Bobby', 'father', 'Hugh'), ('Hugh', 'mother', 'Frances')]}, {('Hugh', 'mother', 'Frances'): [('Hugh', 'brother', 'Wesley'), ('Wesley', 'mother', 'Frances')]}]
['father', 'brother', 'mother']