Created a lib directory and added entity_resource.rb as well as query_resource.rb.

lib/entity_resource.rb

@@ -0,0 +1,7 @@
+require 'active_resource'
+
+class EntityResource < ActiveResource::Base
+  self.site ='http://localhost:3000'
+  self.element_name = "entity"
+
+end

lib/query_resource.rb

@@ -0,0 +1,10 @@
+require 'active_resource'
+
+class QueryResource < ActiveResource::Base
+  self.site ='http://localhost:3000'
+  self.element_name = "query"
+  has_many :entities, class_name: 'EntityResource'
+  def to_param
+    self.identifier
+  end
+end