['pile', 'stop', 'he', 'EmptyParameter', 'EmptyParameter']
["Synset('electrical_device.n.01')", 'forbid-64.4-1', '<PRP>', 'EmptyParameter', 'EmptyParameter']
A pile of barrels stops him.
a Synset('electrical_device.n.01') of Synset('dry_unit.n.01') stops <PRP>.