This might work except it’s not an accurate representation of what BLT is using the catalog property for. BLT holds roundtables in ADDITION to editathons. And how do other initiatives use this who are needing the same unique identifier but have no roundtable as part of their initiative. 

This concept needs to be transferable to all outreach initiatives that want to integrate Wikidata into their task lists and establishment of notability. 

On Jan 5, 2018, at 5:39 PM, Thad Guidry <thadguidry@gmail.com> wrote:

In looking further into this, I strongly feel that my suggestion of "participant of" is a really nice fit for this use case.  A few things are needed to make it comfortable for all.

1. Add a new topic in Wikipedia called "Black Lunch Table Artist Roundtable" and subclass it as an Event to Wikidata  (we already have "Black Lunch Table")
2. Add the "participant of" statement on each artist or participant at the event.
3. If you want more detail about each particular Roundtable event / meetup itself, then use qualifiers for that ?  Although not all of these in this link are qualifiers (I think) but there's some very useful properties under here to help know more about each "BLT Artist Roundtable" event https://www.wikidata.org/wiki/Special:WhatLinksHere/Q22964785

Hope that helps and have a great weekend Ericka !
-Thad
+ThadGuidry

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