['he', 'find', 'information', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'declare-29.4', "Synset('system_of_measurement.n.01')", 'EmptyParameter', 'EmptyParameter']
Here, he could find all the information.
Here, <PRP> could find all the Synset('system_of_measurement.n.01').