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: Who is Elizabeth' s grandchildren, Diana' s brother-in-law/brother-in-law and Zara great-grandparents?

FamilyTree_KB
.............\pack
.............\....\CommandInterpreter$1.class
.............\....\CommandInterpreter.class
.............\....\CommandInterpreter.java
.............\....\FamilyTree.class
.............\....\Functions.class
.............\....\Hash.class
.............\....\LinkNode.class
.............\....\Person.class
.............\....\Relation.class
.............\....\SingleCycleLink.class
.............\test.class
.............\test.java
.............\说明.txt

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