[David] took her son [Bobby] to the mall to shop for school clothes. [James] is the proud father of the lovely [Joshua] [Bobby] could n't wait to introduce his new son to his uncle, [Joshua].
('David', 'James')
[David] took her son [Bobby] to the mall to shop for school clothes. [Bobby] could n't wait to introduce his new son to his uncle, [Joshua]. [James] is the proud father of the lovely [Joshua]
[{('David', 'father', 'James'): [('David', 'brother', 'Joshua'), ('Joshua', 'father', 'James')]}, {('David', 'brother', 'Joshua'): [('David', 'son', 'Bobby'), ('Bobby', 'uncle', 'Joshua')]}]
['son', 'uncle', 'father']