In the example below, first the shortcut prefixes for the lv2, doap and spdx ontology are declared. Next, every plugin must have its own URI or URN. Then the 4 following lines declare that this resource is an lv2:Plugin, a binary object file library with the filename silence.so should be present, that the plugin is known under the name Silence, and is licensed under the GNU GPL. These 4 properties are mandatory for an LV2 plugin; if a plugin does not have all of them a host might not load it.