EntityProperty

EntityProperty[type, pname] represents a property identified by pname for use in EntityValue.

EntityProperty[class, pname] represents a property introduced by the computed entity class class.

EntityProperty[type, pname, {qual1->val1, qual2->val2, …}] represents a property modified by the qualifier rules quali->vali.

Examples

Get a property of a country:

EntityValue[Entity["Country", "France"], EntityProperty["Country", "Population"]]

Use a qualified property:

EntityProperty["Country", "Population", {"Date" -> 2020}]

Please visit the official Wolfram Language Reference for more details.