Abstract: A method comprising receiving first data representative of a query received by an electronic device. Device characteristic data indicative of at least one characteristic of the electronic device is received. It is determined, using the device characteristic data, that the electronic device is authorized to access a first portion of at least one knowledge graph, which is an access-controlled portion. The at least one knowledge graph also includes a second portion which is a non-access-controlled portion. The first data is sent to at least the first portion of the at least one knowledge graph. Second data is received from the first portion of the at least one knowledge graph. The second data is representative of an answer to the query. Answer data representative of the answer to the query is generated using the second data.

Abstract: A system and method for determining a dynamic sample of client devices in a distributed system environment are provided. Coordinates for areas based on geospatial input are received. A predicate function that selects a dynamic sample of client devices in the one or more areas based on the received coordinates is determined. The client devices are selected based on the predicate function. A request for information is queried from the selected client devices and is processed.