['scan', 'reveal', 'sign', 'EmptyParameter', 'EmptyParameter']
["Synset('investigation.n.02')", 'confess-37.10', "Synset('location.n.01')", 'EmptyParameter', 'EmptyParameter']
Sensor scans of the planet reveal no sign of intelligent lifeforms.
Synset('instrumentality.n.03') Synset('investigation.n.02') of the Synset('natural_object.n.01') reveal no Synset('location.n.01') of Synset('intelligent.a.01') lifeform.