['crew', 'find', 'child', 'EmptyParameter', 'EmptyParameter']
["Synset('unit.n.03')", 'discover-84', "Synset('relative.n.01')", 'EmptyParameter', 'EmptyParameter']
The crew can find the child.
the Synset('unit.n.03') can find the Synset('relative.n.01').