[Francisco] watched his son [Leonard] play catch. [Leonard] tossed the ball back and fourth with his brother [Richard]. [Francisco] waited for [Cindy] to wrap up at work.
('Cindy', 'Richard')
[Francisco] waited for [Cindy] to wrap up at work. [Francisco] watched his son [Leonard] play catch. [Leonard] tossed the ball back and fourth with his brother [Richard].
[{('Cindy', 'son', 'Richard'): [('Cindy', 'husband', 'Francisco'), ('Francisco', 'son', 'Richard')]}, {('Francisco', 'son', 'Richard'): [('Francisco', 'son', 'Leonard'), ('Leonard', 'brother', 'Richard')]}]
['husband', 'son', 'brother']