['guard', 'trigger', 'alarm', 'EmptyParameter', 'EmptyParameter']
["Synset('position.n.09')", 'engender-27.1', "Synset('instrumentality.n.03')", 'EmptyParameter', 'EmptyParameter']
Guards on the next level trigger the alarm.
Synset('position.n.09') on the next Synset('device.n.01') trigger the Synset('instrumentality.n.03').