['what', 'prompt', 'she', 'EmptyParameter', 'EmptyParameter'] ['she', 'do', 'this', 'EmptyParameter', 'EmptyParameter']
['what', 'engender-27.1', '<PRP>', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'act-114-1', 'this', 'EmptyParameter', 'EmptyParameter']
The Doctor is curious as to what prompted her to do this.
<PERSON>10 is Synset('curious.a.02') as to what prompted <PRP> to do this.