Semantic Triples are a poorly defined concept

 I read up more on JSON-LD.

• - it is based on RDF
• - RDF is based on the notion of semantic triples from natural language grammar
• - because the natural language concept is 'loose', I am going to discount the whole stack, and not pay so much attention to RDF or JSON-LD as comprehensive solutions ( they seem to remain useful within narrow scopes )