gpsr grammar updated

ps-grammar/gpsr/gpsr.jsgf

@@ -6,7 +6,7 @@ public <task> = <location_task> | <item_task> | <interact_task>;
 
 <location_task> = <nav_commands> [the] <locations> [[(and | then)] <task>];
 
-<nav_commands> = (move to) | (go to) | (navigate to) | (get into) | from | exit | leave | (in the) | (at the);
+<nav_commands> = (move to) | (go to) | (navigate to) | (get into) | from | exit | leave | (in the) | (at the) | find;
 <locations> = cupboard | couchtable | cabinet | tv | couch | kitchencounter | stove | fridge |  sink | trashbin | bartable | small_table |  coathanger | bed | left_beside_table | right_beside_table | counter | left_bookcase | right_bookcase | dinnertable | desk | livingroom | kitchen | hall | bedroom | office;
 
 
@@ -35,7 +35,7 @@ public <task> = <location_task> | <item_task> | <interact_task>;
 <talk_with_person> = <talk_commands> ((something about (([to | the] <per>) | <person>)) | (the day of the month));
 <talk_commands> = tell | report | answer | introduce;
 
-<interact_with_person> = <memory_commands> [the | a] [<per>] ((in front of you) | ([in | at] [the] <locations>));
+<interact_with_person> = <memory_commands> [the | a] [<per>] ((in front of you) | ([(in | at) the <locations>));
 <memory_commands> = follow | memorize | find;