diff --git a/ps-grammar/roboNurse/roboNurse.jsgf b/ps-grammar/roboNurse/roboNurse.jsgf
index 0c6174d7b50a21ab9b0de2b21ac528c3c2a7be1d..fe3e515b99cd22c56a1d36e321f9c7965cb98ac2 100644
--- a/ps-grammar/roboNurse/roboNurse.jsgf
+++ b/ps-grammar/roboNurse/roboNurse.jsgf
@@ -9,3 +9,7 @@ public <root> = [tobi] [please] (<command>);
 <pillsspec> = [i need] [the] <properties> (one|bottle);
 
 <properties> = (left most|right most|blue|red|green|big|small);
+<aspirin>=aspirin;
+<milk> = milk;
+<coffee>=coffee;
+<coke> = coke;