private void canonicalizeReifications(NamedGraph g){
		ArrayList<String[]> sigs=g.getMSGSignatures();
		if (sigs!=null && !sigs.isEmpty()){
			for (String[] sig:sigs){
				for (int i=0; i<=2; i+=2){
					if (sig[i].startsWith("_")){
						Integer lookupName = lookupTable.get(sig[i]);
						if (lookupName!=null){
							sig[i]="_:g"+counter.createSymStringFromInt(lookupName);
						}
					}
				}
			}
		}
	}