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Sigma KEE - stepfather
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
stepfather
(stepfather ?PERSON ?FATHER) means that ?FATHER is the stepfather of ?PERSON, i.e. ?FATHER is the spouse of the mother of ?PERSON, without also being the father of ?PERSON.
Relationships      
Parents legalRelation (legalRelation ?AGENT1 ?AGENT2) means that ?AGENT1 and ?AGENT2 are relatives by virtue of a legal relationship. Some examples include marriage, adoption, etc.
InstancesabstraitProperties or qualities as distinguished from any particular embodiment of the properties/qualities in a physical medium. Instances of Abstract can be said to exist in the same sense as mathematical objects such as sets and relations, but they cannot exist at a particular place and time without some physical encoding or embodiment.
 pr�dicat binaireA Predicate relating two items - its valence is two.
 relation binaireBinaryRelations are relations that are true only of pairs of things. BinaryRelations are represented as slots in frame systems.
 entit�The universal class of individuals. This is the root node of the ontology.
 InheritableRelationThe class of Relations whose properties can be inherited downward in the class hierarchy via the subrelation Predicate.
 predicatA Predicate is a sentence-forming Relation. Each tuple in the Relation is a finite, ordered sequence of objects. The fact that a particular tuple is an element of a Predicate is denoted by '(*predicate* arg_1 arg_2 .. arg_n)', where the arg_i are the objects so related. In the case of BinaryPredicates, the fact can be read as `arg_1 is *predicate* arg_2' or `a *predicate* of arg_1 is arg_2'.
 relationThe Class of relations. There are two kinds of Relation: Predicate and Function. Predicates and Functions both denote sets of ordered n-tuples. The difference between these two Classes is that Predicates cover formula-forming operators, while Functions cover term-forming operators.
 relation sym�triqueA BinaryRelation ?REL is symmetric just iff (?REL ?INST1 ?INST2) imples (?REL ?INST2 ?INST1), for all ?INST1 and ?INST2.
Belongs to Class entit�


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