['thing', 'happen', 'EmptyParameter', 'relationship', 'in']
["Synset('entity.n.01')", 'occur-48.3', 'EmptyParameter', "Synset('abstraction.n.06')", 'in']
Those thing could happen in normal relationships.
those Synset('entity.n.01') could happen in Synset('normal.a.03') Synset('abstraction.n.06').