This document outlines the schedule and agenda for Session 4 of the GeoCENS - SWE 2011 Workshop. There will be 5 presentations on the topics of sensor web ontologies, semantics, and metadata languages. The first 3 presentations will be full 15-minute papers, while the last 2 will be shorter 10-minute papers. Due to the tight schedule, there will be no time for questions - attendees are encouraged to ask presenters during the upcoming coffee break. The session will be moderated by Yan Xu and follow a strict timeline to accommodate all 5 presentations.