['he', 'pick', 'pathogen', 'surface', 'on']
['<PRP>', 'get-13.5.1', "Synset('agent.n.01')", "Synset('feature.n.01')", 'on']
Apparently he picked up a pathogen on the surface.
apparently <PRP> picked up a Synset('agent.n.01') on the Synset('feature.n.01').