| Subject | Object |
| ?:Account | "A Solid account."@en |
| ?:Inbox | "A resource containing notifications."@en |
| ?:Notification | "A notification resource."@en |
| ?:Timeline | "A resource containing time ordered items and sub-containers. Sub-containers may be desirable in file based systems to split the timeline into logical components e.g. /yyyy-mm-dd/ as used in ISO 8061."@en |
| ?:Type index | "A index of type registries for resources. Applications can register the RDF type they use and list them in the index resource."@en |
| ?:account | "A solid account belonging to an Agent."@en |
| ?:inbox | "Inbox resource for notifications."@en |
| ?:notification | "Notification resource for an inbox."@en |
| ?:read | "Indicates if a message has been read or not. This property should have a boolean datatype."@en |
| ?:timeline | "Timeline for a given resource."@en |
| ?:type index | "Points to a TypeIndex resource."@en |