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KB:
SUMO
Language:
ChineseLanguage
ChinesePinyinWriting
ChineseSimplifiedWriting
ChineseTraditionalLanguage
EnglishGroupLanguage
EnglishLanguage
FrenchLanguage
GermanLanguage
JapaneseLanguage
SpanishLanguage
SwedishLanguage
measuringListInterval
Formal Language:
OWL
SUO-KIF
TPTP
traditionalLogic
KB Term:
Knowledge base statistics:
as of 2026/06/09
Total Terms
Total Axioms
Total Rules
15796
219033
7613
Relations:
136135
non-linguistic axioms:
164461
Ground tuples:
211331
of which are binary:
151363
of which arity more than binary:
60057
Rules:
7613
of which are:
horn:
2591
first-order:
5583
higher-order:
2030
of which are:
temporal:
695
deontic:
108
epistemic:
126
other modal:
972
Sigma web home
Suggested Upper Merged Ontology (SUMO) web home
Sigma version 3.0.0-
a0f4e817
(2026-06-09) is
open source software
produced by
Articulate Software
and its partners