TopQuadrant supports Feature:PropertyPaths

Dear SPARQL Working Group,

TopQuadrant (W3C member) supports the addition of Property Paths [1]  
to the upcoming version of SPARQL. Our main use case for this is "on- 
the-fly" inferencing so that hierarchies of sub-classes and properties  
can be traversed transitively. For example, the following query  
returns all instances of :Rectangle or the sub-classes of :Rectangle.  
This dramatically reduces the need to rely on any natively built-in  
inference capabilities of a triple store, and thus makes queries more  
platform independent.

SELECT ?instance
WHERE {
     ?type rdfs:subClassOf* :Rectangle .
     ?instance a ?type .
}

If generic path expressions (+ etc) are out of scope, we would at  
least appreciate the * operator as shown above, or another mechanism  
with similar expressivity.

Regards,
Holger

[1] http://www.w3.org/2009/sparql/wiki/Feature:PropertyPaths