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diff --git a/src/Data/JLD/NodeMap.hs b/src/Data/JLD/NodeMap.hs
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+++ b/src/Data/JLD/NodeMap.hs
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+module Data.JLD.NodeMap (NodeMap, BNMParams (..)) where
+
+import Data.JLD.Prelude
+
+import Data.JLD.Control.Monad.RES (REST, execREST, runREST, withEnvRES, withErrorRES, withErrorRES', withStateRES)
+import Data.JLD.Error (JLDError (..))
+import Data.JLD.Model.ActiveContext (ActiveContext (..), containsProtectedTerm, lookupTerm, newActiveContext)
+import Data.JLD.Model.Direction (Direction (..))
+import Data.JLD.Model.IRI (CompactIRI (..), endsWithGenericDelim, isBlankIri, parseCompactIri)
+import Data.JLD.Model.Keyword (Keyword (..), allKeywords, isKeyword, isKeywordLike, isNotKeyword, parseKeyword)
+import Data.JLD.Model.Language (Language (..))
+import Data.JLD.Model.TermDefinition (TermDefinition (..), newTermDefinition)
+import Data.JLD.Model.URI (parseUri, uriToIri)
+import Data.JLD.Options (ContextCache, Document (..), DocumentCache, DocumentLoader (..), JLDVersion (..))
+import Data.JLD.Util (flattenSingletonArray, valueContains, valueContainsAny, valueIsTrue, valueToArray)
+
+import Control.Monad.Except (MonadError (..))
+import Data.Aeson (Object, Value (..))
+import Data.Aeson.Key qualified as K (fromText, toText)
+import Data.Aeson.KeyMap qualified as KM (delete, keys, lookup, member, size)
+import Data.Map.Strict qualified as M (delete, insert, lookup)
+import Data.RDF (parseIRI, parseRelIRI, resolveIRI, serializeIRI, validateIRI)
+import Data.Set qualified as S (insert, member, notMember, size)
+import Data.Text qualified as T (drop, dropEnd, elem, findIndex, isPrefixOf, null, take, toLower)
+import Data.Vector qualified as V (length)
+import Text.URI (URI, isPathAbsolute, relativeTo)
+import Text.URI qualified as U (render)
+
+type NodeMap = Map (Text, Text, Text) Value
+
+type BNMT e m = REST BNMEnv (JLDError e) BNMState m
+
+data BNMEnv = BNMEnv
+    { bnmEnvDocument :: Value
+    , bnmEnvActiveGraph :: Text
+    , bnmEnvActiveSubject :: Maybe Text
+    , bnmEnvActiveProperty :: Maybe Text
+    }
+    deriving (Show)
+
+newtype BNMState = BNMState
+    { bnmStateNodeMap :: NodeMap
+    }
+    deriving (Show, Eq)
+
+data BNMParams = BNMParams
+    { bnmParamsNodeMap :: NodeMap
+    , bnmParamsActiveGraph :: Text
+    , bnmParamsActiveSubject :: Maybe Text
+    , bnmParamsActiveProperty :: Maybe Text
+    , bnmParamsList :: Map Text Value
+    }
+    deriving (Show, Eq)
+
+bnmModifyNodeMap :: Monad m => (NodeMap -> NodeMap) -> BNMT e m ()
+bnmModifyNodeMap fn = modify \s -> s{bnmStateNodeMap = fn (bnmStateNodeMap s)}
+
+buildNodeMap' :: Monad m => BNMT e m ()
+buildNodeMap' = do
+    pure ()
+
+buildNodeMap :: Monad m => Value -> (BNMParams -> BNMParams) -> m NodeMap
+buildNodeMap document paramsFn = do
+    BNMState{..} <- buildNodeMap' |> execREST env st
+    pure bnmStateNodeMap
+  where
+    BNMParams{..} =
+        paramsFn
+            BNMParams
+                { bnmParamsNodeMap = mempty
+                , bnmParamsActiveGraph = show KeywordDefault
+                , bnmParamsActiveSubject = Nothing
+                , bnmParamsActiveProperty = Nothing
+                , bnmParamsList = mempty
+                }
+
+    env =
+        BNMEnv
+            { bnmEnvDocument = document
+            , bnmEnvActiveGraph = bnmParamsActiveGraph
+            , bnmEnvActiveSubject = bnmParamsActiveSubject
+            , bnmEnvActiveProperty = bnmParamsActiveProperty
+            }
+
+    st =
+        BNMState
+            { bnmStateNodeMap = bnmParamsNodeMap
+            }