['something', 'dawn', 'EmptyParameter', 'he', 'on']
["Synset('entity.n.01')", 'appear-48.1.1', 'EmptyParameter', '<PRP>', 'on']
If something important has just dawned on him.
if Synset('entity.n.01') Synset('significant.a.01') has just dawned on <PRP>.