diff --git a/4_Queries_SQL/Specific_Instance_ Implementations.sql b/4_Queries_SQL/Specific_Instance_ Implementations.sql
new file mode 100644
index 0000000..6e08067
--- /dev/null
+++ b/4_Queries_SQL/Specific_Instance_ Implementations.sql	
@@ -0,0 +1,37 @@
+-- Show how Hyrum Reservoir node instance has seven different implementations 
+-- where ObjectTypeCV and InstanceNameCV make all of them related.
+
+SELECT DISTINCT ResourceTypeAcronym,MasterNetworkName, ScenarioName,ObjectTypeCV,ObjectType,InstanceNameCV,InstanceName
+
+FROM ResourceTypes
+
+Left JOIN "ObjectTypes" 
+ON "ObjectTypes"."ResourceTypeID"="ResourceTypes"."ResourceTypeID"
+
+LEFT JOIN  "Attributes"
+ON "Attributes"."ObjectTypeID"="ObjectTypes"."ObjectTypeID"
+
+LEFT JOIN "Mappings"
+ON "Mappings"."AttributeID"= "Attributes"."AttributeID"
+
+LEFT JOIN "Instances" 
+ON "Instances"."InstanceID"="Mappings"."InstanceID"
+
+LEFT JOIN "ValuesMapper" 
+ON "ValuesMapper"."ValuesMapperID"="Mappings"."ValuesMapperID"
+
+LEFT JOIN "ScenarioMappings"
+ON "ScenarioMappings"."MappingID"="Mappings"."MappingID"
+
+LEFT JOIN "Scenarios" 
+ON "Scenarios"."ScenarioID"="ScenarioMappings"."ScenarioID"
+
+LEFT JOIN "MasterNetworks" 
+ON "MasterNetworks"."MasterNetworkID"="Scenarios"."MasterNetworkID"
+
+
+
+-- Specifiy controlled Object Type, instance name, and an attribute of interest
+WHERE ObjectTypeCV='Reservoir'  and InstanceNameCV='Hyrum Reservoir' 
+
+