[Lois] picked her sister, [Martha], up from the mall. [Martha] called her dad, [Roy], when she got home to let him know where she was.
('Roy', 'Lois')
[Lois] picked her sister, [Martha], up from the mall. [Martha] called her dad, [Roy], when she got home to let him know where she was.
[{('Roy', 'daughter', 'Lois'): [('Roy', 'daughter', 'Martha'), ('Martha', 'sister', 'Lois')]}]