根据家族树的基本事实。采用适当的逻辑推理系统，把已经写出的所有语句TELL系统，并ASK系统：谁是Elizabeth的孙子女，Diana的姐夫/妹夫和Zara的曾祖父母？-According to the basic facts of the family tree. The use of appropriate logical reasoning systems, to have to write all the statements TELL system and ASK systems:

一个简单的家谱软件，可以构造一个family tree,并对其进行各种修改-A simple family tree software, you can construct a family tree, and its various amendments

java与数据库编程，实现具有基本的查看添加修改删除功能的简单的家谱管理系统-java database programming, with a view to add modify remove the basic function of a simple family tree management system

java编写的以树结构家谱，可以检验两个人之间是否有血源关系.很有意思的！-prepared in a tree structure java family tree, between two people can test whether blood relations. very interesting!