The ESG Ontology was developed for the Earth System Grid, a project of the US. Department of Energy through the Scientific Discovery through Advanced Computing Program. It has been created by Line C. Pouchard, Computer Science and Mathematics Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831. For re-use and distribution, please observe open source licensing practices and credit the author and sponsors. 1.1 "format" is a reference to the external usage metadata (machine generated) and also associates the dataset with an external service handling this external metadata (not related to ESG:service) 1 1 follows iso 8601. See http://www.cl.cam.ac.uk/~mgk25/iso-time.html Scientific Investigation example