[Milton] called his brother [Glen] on Friday because it was his birthday. [Emily] borrowed some money from her brother [Milton].
('Emily', 'Glen')
[Emily] borrowed some money from her brother [Milton]. [Milton] called his brother [Glen] on Friday because it was his birthday.
[{('Emily', 'brother', 'Glen'): [('Emily', 'brother', 'Milton'), ('Milton', 'brother', 'Glen')]}]
['brother', 'brother']