Knowledge base statistics: as of 2026/02/13
Total TermsTotal AxiomsTotal Rules
26115 388697 7946

Relations: 1859
non-linguistic axioms: 323697

Ground tuples: 380653
  of which are binary: 310137
  of which arity more than binary: 70614

Rules: 7946
  of which are horn: 2651
first-order: 5799
temporal: 924
modal: 305
epistemic: 94
other higher-order: 950



Sigma web home      Suggested Upper Merged Ontology (SUMO) web home
Sigma version 3.0 is open source software produced by Articulate Software and its partners