TimeInterval
(time interval)
No TPTP formula. May not be expressible in strict first order.
relations-ro.kif 577-577
No TPTP formula. May not be expressible in strict first order.
terms-tg.txt 90-90
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