['he', 'surprise', 'EmptyParameter', 'behavior', 'at'] ['he', 'arrive', 'EmptyParameter', 'Earth', 'on']
['<PRP>', 'amuse-31.1', 'EmptyParameter', "Synset('act.n.02')", 'at'] ['<PRP>', 'escape-51.1-1', 'EmptyParameter', '<LOCATION>7', 'on']
He was surprised at the aggressive behavior of 20th century Humans when he arrived on Earth.
<PRP> was surprised at the Synset('aggressive.a.01') Synset('act.n.02') of <DATE>7 Synset('primate.n.02') when <PRP> arrived on <LOCATION>7.