The Extensible Observation Ontology Rice Ontology Source
http://ecoinformatics.org/oboe/oboe.1.2/oboe-core.owl#Measurement http://www.cropontology.org/rdf/Measurement LOOM
http://ecoinformatics.org/oboe/oboe.1.2/oboe-characteristics.owl#Time http://www.cropontology.org/rdf/Time LOOM
http://ecoinformatics.org/oboe/oboe.1.2/oboe-characteristics.owl#Count http://www.cropontology.org/rdf/CO_320:0001342 LOOM