UML-概念类图（Conceptual Class Diagram / Domian Model）

题目：

Priests and Devils

    Priests andDevils is a puzzlegame in which you will help the Priests and Devils to cross the river within thetime limit. There are 3 priests and 3 devils atone side of the river. They all want to get to the other side of this river, but there is only one boat and this boat can only carry two persons each time. And there must be one person steering the boat from one side to the other side. In the flash game, you can click on them to move them and click the go button to move the boat to the other direction. If the priests are out numbered by the devils on either side of the river, they get killed and the game is over. You can try it in many ways. Keep all priests alive! Good luck!

画法：
简单来说就两步

（1）找关键词（加粗显示）

（2）找关键词的关系，联系起来。

我的画法如下：