A sub property of object. The collection target of the action.

The default value of the input. For properties that expect a literal, the default is a literal value, for properties that expect an object, it's an ID reference to one of the current values.

A sub property of object. The options subject to this action.

The tangible thing generated by the service, e.g. a passport, permit, etc.

An item within a data feed. Data feeds may have many elements.

Assets required to secure loan or credit repayments. It may take form of third party pledge, goods, financial instruments (cash, securities, etc.)

Of a [Person](https://schema.org/Person), and less typically of an [Organization](https://schema.org/Organization), to indicate a topic that is known about - suggesting possible expertise but not implying it. We do not distinguish skill levels here, or relate this to educational content, events, objectives or [JobPosting](https://schema.org/JobPosting) descriptions.

Indicates something directly or indirectly funded or sponsored through a [Grant](https://schema.org/Grant). See also [ownershipFundingInfo](https://schema.org/ownershipFundingInfo).

The [observationAbout](https://schema.org/observationAbout) property identifies an entity, often a [Place](https://schema.org/Place), associated with an [Observation](https://schema.org/Observation).

Indicates a prototype of the elements in the list that is used to hold aggregate information (ratings, offers, etc.).

Data associated with the event, like for instance a log message.