diff --git a/packages/services/hmi-server/src/main/java/software/uncharted/terarium/hmiserver/models/dataservice/dataset/DatasetColumn.java b/packages/services/hmi-server/src/main/java/software/uncharted/terarium/hmiserver/models/dataservice/dataset/DatasetColumn.java
index 8dce10da09..f20ea5ee4b 100644
--- a/packages/services/hmi-server/src/main/java/software/uncharted/terarium/hmiserver/models/dataservice/dataset/DatasetColumn.java
+++ b/packages/services/hmi-server/src/main/java/software/uncharted/terarium/hmiserver/models/dataservice/dataset/DatasetColumn.java
@@ -30,7 +30,7 @@ public class DatasetColumn {
 	private String formatStr;
 
 	/** Column annotations from the MIT data profiling tool **/
-	private Map<String, List<String>> annotations;
+	private List<String> annotations;
 
 	/** (Optional) Unformatted metadata about the dataset **/
 	@TSOptional
@@ -38,7 +38,7 @@ public class DatasetColumn {
 
 	/** (Optional) Grounding of ontological concepts related to the column **/
 	@TSOptional
-	private Map<String, Grounding> grounding;
+	private Grounding grounding;
 
 	enum ColumnType {
 		@JsonAlias("unknown")