Re: How to interpret PROV-XML's //prov:actedOnBehalfOf/prov:activity/@prov:ref

from http://www.w3.org/TR/prov-dm/#dfn-actedonbehalfof

A delegation ◊ link, written actedOnBehalfOf(id; ag2, ag1, a, attrs) in PROV-N, has:
id: an optional identifier for the delegation link between delegate and responsible;
delegate: an identifier (ag2) for the agent associated with an activity, acting on behalf of the responsible agent;
responsible: an identifier (ag1) for the agent, on behalf of which the delegate agent acted;
activity: an optional identifier (a) of an activity for which the delegation link holds;
attributes: an optional set (attrs) of attribute-value pairs representing additional information about this delegation link.
The prov:activity element is aligned with the optional activity identifier for the activity for which the delegation link holds.

--Stephan

On Dec 12, 2012, at 10:03 AM, Timothy Lebo <lebot@rpi.edu> wrote:

> prov-wg,
> 
> I'm trying to decipher what the prov:activity element on a prov:actedOnBehalfOf element means in terms of PROV-O.
> 
> 
> http://dvcs.w3.org/hg/prov/file/4f724446d633/examples/eg-40-xml-examples-by-term/xml/Delegation.xml
> claims to be derived from example 37 of 
> http://www.w3.org/TR/prov-dm/#anexample-wasAssociatedWith
> and includes the XML fragment:
> 
>   <prov:actedOnBehalfOf>
>     <prov:delegate prov:ref="ag1"/>
>     <prov:responsible prov:ref="ag2"/>
>     <prov:activity prov:ref="a"/>
>     <prov:type xsi:type="xsd:QName">line-management</prov:type>
>   </prov:actedOnBehalfOf>
> 
> but the DM example does not seem to include this kind of assertion.
> 
> Perhaps Delegation.xml should cite http://www.w3.org/TR/prov-dm/#term-delegation 's example 38?
> 
> 
> 
> Does the prov:activity element imply:
> 
> <ag1> prov:wasAssociatedWith <a> .
> 
> or, generally:
> 
> prov:delegate/@prov:ref prov:wasAssociatedWith prov:activity/@prov:ref .
> 
> If not, why is prov:activity permitted on prov:actedOnBehalfOf?
> 
> Thanks!
> Tim