diff --git a/psGrammar/tasks/gpsr/gpsr23.jsgf b/psGrammar/tasks/gpsr/gpsr23.jsgf
index 2af624093d8c7d2621edfdcd980ccea1cd90feb6..43bbf4dad22da63a0946a01cb4fd27618cf7dd3b 100644
--- a/psGrammar/tasks/gpsr/gpsr23.jsgf
+++ b/psGrammar/tasks/gpsr/gpsr23.jsgf
@@ -175,8 +175,8 @@ public <sentence> 		= [could you | robot | tobi | tiago] [please] <command>;
 <N_category>                	= containers | (cleaning supplies) | drinks | food | fruits | toys | snacks | dishes;
 <N_room>                    	= kitchen | (living room) | bedroom | study;
 <N_roomTwo> 			= kitchen | (living room) | bedroom | study;
-<N_placement>               	= (bedside table) | shelf | trashbin | dishwasher | kitchen table | pantry | cabinet | desk | (tv stand) | (storage rack) | (bookshelf);
-<N_placementTwo>            	= (bedside table) | shelf | trashbin | dishwasher | kitchen table | pantry | cabinet | desk | (tv stand) | (storage rack) | (bookshelf);
+<N_placement>               	= (bedside table) | shelf | trashbin | dishwasher | kitchen table | pantry | cabinet | desk | (tv stand) | (storage rack) | (bookshelf) | (side tables);
+<N_placementTwo>            	= (bedside table) | shelf | trashbin | dishwasher | kitchen table | pantry | cabinet | desk | (tv stand) | (storage rack) | (bookshelf) | (side tables);
 <N_beacon>                  	= (bedside table) | shelf | trashbin | dishwasher | kitchen table | pantry | cabinet | desk | (tv stand) | (storage rack) | (bookshelf) | bed | (potted plant) | chairs | refrigerator | sink | coatrack | armchair | (desk lamp) | lamp | (side tables) | (sofa) | exit | entrance;
 <N_beaconTwo>               	= (bedside table) | shelf | trashbin | dishwasher | kitchen table | pantry | cabinet | desk | (tv stand) | (storage rack) | (bookshelf) | bed | (potted plant) | chairs | refrigerator | sink | coatrack | armchair | (desk lamp) | lamp | (side tables) | (sofa) | exit | entrance;
 <N_name>                    	= alex | charlie | elizabeth | francis | jennifer | linda | mary | patricia | james | john | michael | robert | robin | skyler | william;