[Pete] met his siblings, [Leonard] and [Wilhelmina], at the campsite. [Leonard]'s grandfather, [James] was ready with the campfire roaring.
('Wilhelmina', 'James')
[Pete] met his siblings, [Leonard] and [Wilhelmina], at the campsite. [Leonard]'s grandfather, [James] was ready with the campfire roaring.
[{('Wilhelmina', 'grandfather', 'James'): [('Wilhelmina', 'brother', 'Pete'), ('Pete', 'grandfather', 'James')]}, {('Pete', 'grandfather', 'James'): [('Pete', 'brother', 'Leonard'), ('Leonard', 'grandfather', 'James')]}]
['brother', 'brother', 'grandfather']