1. A method performed by an information processing device for facilitating searches using metadata, the method comprising: generating first metadata for a set of entities, the first metadata indicative of a first element associated with an entity; generating second metadata for a set of entities, the second metadata indicative of a second element associated with the entity; receiving search criteria; determining whether an entity in the set of entities applies to the search criteria based on the first metadata and the second metadata; and generating search results based on whether an entity in the set of entities applies to the search criteria.