[rsp] RSP calls

Dear all,

As we've had a very busy (but interesting) month of April, we had also a sort of 'spring break' for the RSP calls. As I am still out-of-office during this week, so I propose to restart our meetings on Fri May 1st, 15:00 CEST.

As many of you know, we had a number  of nice submissions for the ESWC RSP workshop. We managed to upgrade it to a full day event, so we are happy to have you in Portoroz. If you didn't submit an EoI feel free to come anyway. 

I remind everyone that last time we were working on a proposal of the rspql query language, extending SPARQL with operators inspired by previous RSP approaches. Have a look at the current status at: https://github.com/streamreasoning/RSP-QL/blob/master/RSP-QL%20Sample%20Queries.md

best regards,
Jean-Paul