code: function(s_thing) {
  		if(H_SPARQL_CHARS[s_thing[0]]) return s_thing;
  		else if(s_thing.indexOf(':') != -1) return s_thing;
  		else if(s_thing == 'a') return s_thing;
  		else return ':'+s_thing;
  	}
docs: converts thing alias to proper identifier if not already specified