['everyone', 'keep', 'busy', 'EmptyParameter', 'EmptyParameter']
["Synset('person.n.01')", 'keep-15.2', "Synset('busy.a.01')", 'EmptyParameter', 'EmptyParameter']
Everyone keeps busy with various tasks.
Synset('person.n.01') keeps Synset('busy.a.01') with various Synset('activity.n.01').