[David] is looking for a good gift for her sister [Lynn]. [Lynn] sat anxiously in the airport terminal, waiting to see her son [Clarence] walk through the gate. [David] called [Lena], her sister, to see if she wanted to go out to eat.
('Lena', 'Clarence')
[David] called [Lena], her sister, to see if she wanted to go out to eat. [David] is looking for a good gift for her sister [Lynn]. [Lynn] sat anxiously in the airport terminal, waiting to see her son [Clarence] walk through the gate.
[{('Lena', 'nephew', 'Clarence'): [('Lena', 'sister', 'Lynn'), ('Lynn', 'son', 'Clarence')]}, {('Lena', 'sister', 'Lynn'): [('Lena', 'sister', 'David'), ('David', 'sister', 'Lynn')]}]
['sister', 'sister', 'son']