[Nicholas] was looking for his son [Milton]. He asked his daughter [Jennifer] if she had seen him, and she told her father that [Nicholas] had gone away for the weekend and would n't be back until Monday.
('Jennifer', 'Milton')
[Nicholas] was looking for his son [Milton]. He asked his daughter [Jennifer] if she had seen him, and she told her father that [Nicholas] had gone away for the weekend and would n't be back until Monday.
[{('Jennifer', 'brother', 'Milton'): [('Jennifer', 'father', 'Nicholas'), ('Nicholas', 'son', 'Milton')]}]
['father', 'son']