private void negateStrings(){
  if (type.isNegated()) {
    original=original + " not";
    normalized=normalized + " not";
  }
 else {
    original=original.replaceFirst(" not","");
    normalized=normalized.replaceFirst(" not","");
  }
}

private void negateStrings ( ) { if ( type . isNegated ( ) ) { original = original + " not" ; normalized = normalized + " not" ; } else { original = original . replaceFirst ( " not" , "" ) ; normalized = normalized . replaceFirst ( " not" , "" ) ; } }
negate original and normalized string , while leaving type untouched .
