[Leonard] asked his father, [Francisco], to help him with his math homework. [Francisco] could n't, because he was lousy at math himself. [Wayne]'s brother, [Richard] went sailing with his other brother, [Leonard].
('Wayne', 'Francisco')
[Wayne]'s brother, [Richard] went sailing with his other brother, [Leonard]. [Leonard] asked his father, [Francisco], to help him with his math homework. [Francisco] could n't, because he was lousy at math himself.
[{('Wayne', 'father', 'Francisco'): [('Wayne', 'brother', 'Richard'), ('Richard', 'father', 'Francisco')]}, {('Richard', 'father', 'Francisco'): [('Richard', 'brother', 'Leonard'), ('Leonard', 'father', 'Francisco')]}]
['brother', 'brother', 'father']