The fundamental concepts of SBVR
The basis for the first bullet is the concept system in the ISO 1087-1 standard for concepts in writing dictionaries and local vocabularies in ISO standards. The basis for the second is unidentified.
Regrettably, SBVR is formulated using a mix of linguistic, semantic, pragmatic, and formal logic concepts without tying up the resulting near misses and loose ends. Further, it is itself written in a semi-formalized English (SBVR Structured English) grammar, which is not normatively or clearly specified. (It is a camel constructed by a committee with diverse expertise, but largely common goals.) Still, the principal concepts in the specification are valid and the approach is correct.