| This service subsumes services that relate to the properties of entities defined in the domain. This type of query should be capable of answering questions such as 'what entities have a speed greater than 300 knots' or 'what entities have an environment category of air'. In all likelihood these queries will be executed in the context of conjunctive queries including a typology-related query, e.g. 'return all entities that have an environment category of air, AND are currently airborne AND are fighter aircraft AND are friendly units'. |