[Wayne] was having a cookout one day, and invited his sister [Natasha]. [Natasha]'s brother [Richard] drove them to the cookout. [James] asked his grandson, [Richard], what he wanted to be when he grew up. [Richard] told him he wanted to be a grandpa.
('James', 'Wayne')
[James] asked his grandson, [Richard], what he wanted to be when he grew up. [Richard] told him he wanted to be a grandpa. [Wayne] was having a cookout one day, and invited his sister [Natasha]. [Natasha]'s brother [Richard] drove them to the cookout.
[{('James', 'grandson', 'Wayne'): [('James', 'grandson', 'Richard'), ('Richard', 'brother', 'Wayne')]}, {('Richard', 'brother', 'Wayne'): [('Richard', 'sister', 'Natasha'), ('Natasha', 'brother', 'Wayne')]}]
['grandson', 'sister', 'brother']