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KB Term:
Sigma KEE - Ladder
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Ladder
An
Artifact
which consists of two parallel supports connected by a series of rungs which can be used to ascend or descend.
Relationships
Parents
artefact
An
Object
that is the product of a
Making
.
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Suggested Upper Merged Ontology (SUMO) web home
Sigma version 3.0 is
open source software
produced by
Articulate Software
and its partners
