A method includes determining geographic coordinates of a plurality of entities, the plurality of entities including a first set of entities that have each been associated with a respective context information item and a second set of entities that have each not been associated with a respective context information item. The geographic coordinates of the first set of entities are used to identify geographic coordinates located within a first geographic area associated with a first context information item. The geographic coordinates of the second set of the entities are used to identify a first entity of the second set of entities that is located within the first graphic area associated with the first context information item. The first entity is associated with the first context information item.