!y,RegexClassifier,negative_label,'n'
"((un[-]?enhanced)|(non[\s-]?contrast))",-1
"filling(-|\s)?defect",0,"(arter)","r",1,"dict:'\(vessels\)'","i",0,"((\bno\b)|(negative)|(without)|(question)|(nofillingdefect))","i",0,
"thromb",0,"arter","r",1,"((without)|(protocol)|(no\s)|(question)|(negative)|(iliac)|(aneurysm)|(no evidence)|(rule.out)|(cannot be ruled out))","i",0
"((\bPE\b)|(pulmonary\s?embol)|(pulmonary\s?thromb)|(saddle\s?embol))",0,"((segmental)|(multiple)|(lobe)|(bilateral)|(suspicio)|(consistent)|(chronic)|(positive)|(acute)|(lobar))",r,1,"((without)|(protocol)|(no\s)|(question)|(negative)|(iliac)|(aneurysm)|(no evidence)|(rule.out)|(cannot be ruled out))","i",0
"((\bPE\b)|(pulmonary\s?embol)|(pulmonary\s?thromb)|(saddle\s?embol))",0,"(\bno\b)|(negative)","rb",-1
"segmental",0,"filling","r",1,"((\bno\b)|(negative)|(without)|(question)|(unchanged))","i",0