I strongly disagree. Subject comparison is always application specific and
should be noted as such. We already have processing rules for trust purposes and
I am sure it will extend to pretty much any application that uses subjects.
Subject point to a resource and therefore are scheme-specific and obey by those
rules.

Relation types and property types URIs on the other hand are strings structured
like URIs. They should follow the same rules as XML namespaces and should not be
normalized. There is no reason what-so-ever for anyone to use different
variations of these URIs - that's where interop breaks.

Either way, the property type questions should be resolved the same way the
relation type question, and that is going to come from Web Linking since we
already bound it to that.

EHL