EntityClass

EntityClass[type, name] represents a class of entities of the specified type identified by name.

EntityClass[type, {property1 -> vspec1, ...}] represents an implicitly defined entity class containing entities for which properties conform to value specifications.

Examples

Named entity class:

EntityClass["Country", "G20"]

Filtered entity class:

EntityClass["Country", "Population" -> GreaterThan[Quantity[100, "Millions"]]]

Please visit the official Wolfram Language Reference for more details.