Update README.md

README.md

@@ -382,6 +382,34 @@ query MyQuery {
 
 ```
 
+- Get __first 3 profiles__ and respective layers that have at least one __Bulk density of the fine earth__.
+
+```graphql
+query MyQuery {
+  wosisLatestProfiles(
+    first: 3
+    filter: {layersExist: true, layers: {every: {bdfi33lValuesExist: true}}}
+  ) {
+    continent
+    region
+    profileId
+    datasetCode
+    layers(first: 10, filter: {bdfi33lValuesExist: true}) {
+      layerId
+      layerName
+      lowerDepth
+      upperDepth
+      bdfi33lValues(first:10){
+        value
+        valueAvg
+      }
+    }
+  }
+}
+
+```
+
+
 ## Spatial queries