['ship', 'go', 'deep', 'EmptyParameter', 'EmptyParameter']
["Synset('craft.n.02')", 'say-37.7', "Synset('deep.a.03')", 'EmptyParameter', 'EmptyParameter']
Their ships are unable to go down that deep.
<PRP> Synset('craft.n.02') are Synset('unable.a.01') to go down that Synset('deep.a.03').