Question on SPARQL Abbreviated Blank Node Syntax Explained

Hi, Group. I have a (SPARQL [Turtle?]) question re: abbreviated blank node syntax. Consider this trivial model: a --relates--> b b --relates--> c b <--relatedBy-- c Note that the b to c relationship is reciprocal. I’d like to represent b and c as blank nodes. Using the label form, it’s seemingly straightforward (I’ve added a couple of additional rdfs:type triples to fill-out a bit what I show next): a ex:relates _:b _: b rdfs:type ex:foo _:b ex:relates _:c _:c rdfs:type ex:bar _:c ex:relatedBy _:b Using the abbreviated form, though, doesn’t seem possible : a ex:relates [ rdfs:type ex:foo ; ex: relates [ rdfs:type ex:bar ; ex:relatedBy <what would go here to refer to the first (outer) blank node?> ] ]. I suppose I’m asking if something can simultaneously be both the container and contained, but perhaps there’s some syntactic sugar/legerdemain I’m not aware of that makes this possible. Thanks! (NB: Also posted this to the users@jena.apache.org listserv; will report back with findings/replies.)