public String toString() {
		String ret = null;
		if (classifierMatches != null) {
			ret = "mul:";
			for (Classifier c : classifierMatches) {
				ret += "[" + c + "]";
			}
		} else if (numberMatch != null) {
			ret = "num:" + numberMatch;
		} else if (intervalMatch != null) {
			ret = "int:" + intervalMatch;
		} else if (conceptMatch != null) {
			ret = "con:" + conceptMatch;
		} else if (stringMatch != null) {
			ret = "str:" + stringMatch;
		} else if (catchAll) {
			ret = "tru:true";
		} else if (nullMatch) {
			ret = "nil:true";
		}
		return ret;
	}