| superclass | description |
|---|---|
| Action | An action performed by a direct agent and indirect participants upon a direct object. Optionally happens at a location with the help of an inanimate instrument. The execution of the action may produce a result. Specific action sub-type documentation specifies the exact expectation of each argument/role.\n\nSee also [blog post](https://blog.schema.org/2014/04/16/announcing-schema-org-actions/) and [Actions overview document](http://schema.org/docs/actions.html). |
| subclass | description |
|---|---|
| CheckAction | An agent inspects, determines, investigates, inquires, or examines an object's accuracy, quality, condition, or state. |
| DiscoverAction | The act of discovering/finding an object. |
| TrackAction | An agent tracks an object for updates.\n\nRelated actions:\n\n* [[FollowAction]]: Unlike FollowAction, TrackAction refers to the interest on the location of innanimates objects.\n* [[SubscribeAction]]: Unlike SubscribeAction, TrackAction refers to the interest on the location of innanimate objects. |