['this', 'cause', 'concern', 'EmptyParameter', 'EmptyParameter']
['this', 'act-114', "Synset('stimulation.n.02')", 'EmptyParameter', 'EmptyParameter']
This causes The Doctor grave concern.
this causes <PERSON>3 Synset('diacritical_mark.n.01') Synset('stimulation.n.02').