['dog', 'stay', 'EmptyParameter', 'ship', 'on'] ['he', 'have', 'opportunity', 'EmptyParameter', 'EmptyParameter']
["Synset('carnivore.n.01')", 'exist-47.1', 'EmptyParameter', "Synset('craft.n.02')", 'on'] ['<PRP>', 'own-100', "Synset('being.n.01')", 'EmptyParameter', 'EmptyParameter']
The dog should have stayed on the ship, in which case he would not have had an opportunity to pee on one of their precious trees.
the Synset('carnivore.n.01') should have stayed on the ship, in which Synset('causal_agent.n.01') <PRP> would not have had an Synset('being.n.01') to pee on one of <PRP> precious Synset('tree.n.03').