[Michael] and his mother [David] are very close. They spend as much time together as they can. [David] does n't like her brother [Joshua]. [Joshua]'s father, [James], bought him some ice cream.
('Michael', 'James')
[Michael] and his mother [David] are very close. They spend as much time together as they can. [David] does n't like her brother [Joshua]. [Joshua]'s father, [James], bought him some ice cream.
[{('Michael', 'grandfather', 'James'): [('Michael', 'mother', 'David'), ('David', 'father', 'James')]}, {('David', 'father', 'James'): [('David', 'brother', 'Joshua'), ('Joshua', 'father', 'James')]}]
['mother', 'brother', 'father']