Party: Assignee=everyone

Hi
I'm developing a number of ODRL / RightsML templates for the IPTC.
Many of the use-cases involve a specific assigner, but no specific assignee, as per the example below:
Use Case: The EPA (assigner) allows anyone (assignee) to distribute (action) a picture (target-asset) within Germany (constraint).
This is currently represented as below:
<o:policy ...>
   <o:permission>
      <o:asset uid="urn:newsml:epa.eu:20090101:120111-999-000013" relation="ov:target"/>
      <o:action name="rml:distribute"/>
      <o:constraint name="http://w3.org/ns/odrl/vocab#spatial" operator="ov:eq"
       rightOperand="http://cvx.iptc.org/iso3166-1a3/DEU"/>
      <o:party uid="http://g2.dpa.com/cv/dpaparty/epa" function="ov:assigner"/>
      <o:party uid="TODO" function="ov:assignee"/>
   </o:permission>
</o:policy>

Question: For the case of assignee=everyone, what is the correct approach?
a/ Omit o:party[ @function="ov:assignee" ] ?
b/ Include o:party[ @function="ov:assignee" ] with some wild-carding of the @uid ?
c/ Other?

Any comments/guidance appreciated.
Many thanks.
DC

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Dave Compton
Information Architect, News Platform.
G2-Standards Technical Owner: NewsML-G2, EventsML-G2.

Thomson Reuters

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