diff --git a/conf/grebe.yaml b/conf/grebe.yaml
index b15743c98..3713be752 100644
--- a/conf/grebe.yaml
+++ b/conf/grebe.yaml
@@ -135,3 +135,25 @@
       widget_options: bbop_term_ac
       widget_personality: ontology
       widget_document: ontology_class
+- question_id: q10
+  question: What are the gene products annotated to term {{q10f1}} but <em>not</em> term {{q10f2}} in species {{q10f3}}? 
+  personality: bioentity
+  document_category: bioentity
+  field_translations:
+    - field_id: q10f1
+      field_filter: isa_partof_closure
+      widget_options: bbop_term_ac
+      widget_personality: ontology
+      widget_document: ontology_class
+    - field_id: q10f2
+      field_filter: -isa_partof_closure
+      widget_options: bbop_term_ac
+      widget_personality: ontology
+      widget_document: ontology_class
+    - field_id: q10f3
+      field_filter: taxon_closure
+      widget_options: bbop_term_ac
+      widget_personality: ontology
+      widget_document: ontology_class
+      widget_filters:
+        - 'source:ncbi_taxonomy'