diff --git a/ps-grammar/gpsr/gpsr.jsgf b/ps-grammar/gpsr/gpsr.jsgf
index 53d84e2ef53d58cf5a3619b53d868129c904f9f4..4c3803741c9a1fd23e83e4f12c314fbde517a555 100644
--- a/ps-grammar/gpsr/gpsr.jsgf
+++ b/ps-grammar/gpsr/gpsr.jsgf
@@ -40,9 +40,6 @@ public <task> = <location_task> | <item_task> | <interact_task>;
 <memory_commands> = follow | memorize | find;
 
 
-<person> = [<noname> | <pron>] (yourself | person | him | her | them | he | she | person | tobi | female | male | <name>);
-
-<name> = anna | mary; 
-
-<pron> = it | them | a | this | the;
-<noname> = to | at | from | in | from;
+<person> = me |yourself | him | her | them | <name>;
+<per> = person | male | female | man | men | woman | women;
+<name> = anna | mary | tobi;