docs: public static boolean foreign(Term term) {
  		String name = term.getName();
  
  		boolean contains = FOREIGNSET.contains(name);
  		if (contains) {
  			return contains;
  		}
  
  		if (!term.getNatureStr().startsWith("nr")) {
  			return false;
  		}
  
  		for (int i = 0; i < name.length(); i++) {
  			if (!FOREIGNSET.contains(String.valueOf(name.charAt(i)))) {
  				return false;
  			}
  		}
  		return true ;
  	}