sdw: ssn task for next ssn meeting

To those interested in ssn,

For the next meeting *please: review the current proposal for SOSA
<kerry> topic: SOSA core - procedures vs devices email thread
https://www.w3.org/2015/spatial/wiki/SOSA_Ontology
https://github.com/w3c/sdw/tree/gh-pages/ssn/rdf
The current code is here: https://github.com/w3c/sdw/blob/gh-pages/ssn/rdf/sosa.ttl

* SOSA core - procedures vs devices email thread<https://lists.w3.org/Archives/Public/public-sdw-wg/2016Jul/0156.html> https://lists.w3.org/Archives/Public/public-sdw-wg/2016Jul/0156.html

Sefki - could you please also consider issue-71 Should sao"point and sao:segment be inside the core for time series analysis.? In particular I think we need a case to be made about why in particular these are useful and necessary for on-board implementation in IoT devices. The use cases you have been working with could be what we need.

Furthermore, that same bar of "necessary" should be addressed to every other term in SAO core.

Finally - I'd like to ask (I recall Joel raised this earlier) what *is* the purpose of the core - ie what defines what belongs in the core and what does not? I think this needs to be well articulated to support our decision making and also our case for the user community.
--Kerry