An apartment (in American English) or flat (in British English) is a self-contained housing unit (a type of residential real estate) that occupies only part of a building (Source: Wikipedia, the free encyclopedia, see [http://en.wikipedia.org/wiki/Apartment](http://en.wikipedia.org/wiki/Apartment)).
The act of registering to an organization/service without the guarantee to receive it.
Related actions:
- [RegisterAction](http://schema.org/RegisterAction): Unlike RegisterAction, ApplyAction has no guarantees that the application will be accepted.
An article, such as a news article or piece of investigative report. Newspapers and magazines have articles of many different types and this is intended to cover them all.
See also [blog post](https://blog.schema.org/2014/09/02/schema-org-support-for-bibliographic-relationships-and-periodicals/).
The act of posing a question / favor to someone.
Related actions:
- [ReplyAction](http://schema.org/ReplyAction): Appears generally as a response to AskAction.