RDF-DAML question: missing object

Hello,

I thought that an RDF triple should always include "subject, verb and
object".

But then I found this example about DAML that seems to miss the object..

==
http://infomesh.net/2001/swintro/

The second useful DAML construct that we shall go through is the
daml:UnambiguousProperty class. Saying that a Property is a
daml:UnambiguousProperty means that if the object of the property is the
same, then the subjects are equivalent. For example:-

foaf:mbox rdf:type daml:UnambiguousProperty .
:x foaf:mbox  .
:y foaf:mbox  .
==

How are these two allowed to miss the object?

Any advice would be most welcome!

Rob
:)



-- 
Robert Mark Bram
B.Comp.(Systems Development/Business Systems)
B.Net.Comp.(Hons)
Doctor of Philosophy Student

School of Network Computing
Faculty of Information Technology
Monash University
Peninsula Campus
McMahons Rd
Frankston, VIC 3199
AUSTRALIA

Phone:  61 3 9904 4394
Facsimile:  61 3 9904 4124
Email: robert.mark.bram@infotech.monash.edu.au

Received on Sunday, 29 August 2004 02:55:51 UTC