[Pamela] and her brother [Irvin] were having a wonderful time at Disneyland. [Wesley] took his daughter [Pamela] to the zoo on Saturday. [Wesley]'s wife [Lena] could n't come as she had to work that day.
('Lena', 'Irvin')
[Wesley] took his daughter [Pamela] to the zoo on Saturday. [Wesley]'s wife [Lena] could n't come as she had to work that day. [Pamela] and her brother [Irvin] were having a wonderful time at Disneyland.
[{('Lena', 'son', 'Irvin'): [('Lena', 'daughter', 'Pamela'), ('Pamela', 'brother', 'Irvin')]}, {('Lena', 'daughter', 'Pamela'): [('Lena', 'husband', 'Wesley'), ('Wesley', 'daughter', 'Pamela')]}]
['husband', 'daughter', 'brother']