How to bind corrisponding classes through an object property

Hi everyone,
i've realised an ontology where there are these four classes:
 
Class: Building, Class:Solid, Class: SpatialRelation
 
Class:BuildingSpatialRelation
subClassOf:SpatialRelation
 
in addition, there are the following object properties:
 
objectProperty:hasGeometry
domain:Building
range:Solid
 
objectProperty:hasSpatialRelation
domain:Building
range:BuildingSpatialRelation
 
objectProperty:bordering
domain:BuildingSpatialRelation
range:Building
 
Now, I can't figure out how is possible to specify a subproperty of "bordering", for instance "touch", which express the fact that "bordering" property imply a
"touch" property between the corrisponding solid of the two building of the relation (and viceversa)
So, my problem is that I don't know how to "get" the corrisponding Solid  of the Building intersted in the sparial relation (a kind of "Building.Solid" in object modelling) which allow to specify that, if there is a touch property between 2 solid then the corrisponding 2 solid are in touch. It seems to be trivial but really at moment I've no idea what is correct solution.
 
Regards,
Antonio A. 		 	   		  
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