['doctor', 'know', 'EmptyParameter', 'race', 'about']
['<PERSON>3', 'comprehend-87.2', 'EmptyParameter', "Synset('natural_process.n.01')", 'about']
The Doctor already knew about the race.
<PERSON>3 already knew about <PERSON>3 Synset('natural_process.n.01').