!TRUE
"high probability",2
"positive for",2
"defect",0,"perfusion","r",1,"\bno\b","r",-1,"small","i",0,"\bmatch","i",0
"((\blow\b)|(negative)|(intermediate)|(indeterminate))",-2
"chronic",0,"embol","r",-4
"embol",1,"((no\s)|(negative)|(without)|(protocol)|(ruled?[- ]out)|(exclude))","i",0,"chronic","r",-1,"((\blow\b)|(negative)|(intermediate)|(indeterminate))","i",0
"sub-?segmental",0,"defect","r",-1