gpsr: test grammar change to circumvent parser bug

psGrammar/tasks/gpsr/gpsr_Narrow.jsgf

 #JSGF V1.0;
 grammar speechRecognition;
 
-public <sentence> = ([tobi | biron] <VP> [([and|then] <VP>)] [([and|then] <VP>)]);
+public <sentence> = ([tobi | biron] <VP1> [([and|then] <VP2>)] [([and|then] <VP3>)]);
 
 
-<VP> 		= (<VP_tritrans> | <VP_bitrans> | <VP_trans> );
+<VP1> 		= (<VP_tritrans> | <VP_bitrans> | <VP_trans> );
+<VP2> 		= (<VP_tritrans> | <VP_bitrans> | <VP_trans> );
+<VP3> 		= (<VP_tritrans> | <VP_bitrans> | <VP_trans> );
+
 <VP_repeat> 	= (and <VP> [<VP_repeat>]) | (then <VP> [<VP_repeat>]) | (<VP> [<VP_repeat>]);
 
 <VP_trans> = <findObj> | <findPrs> | <followPrs> | <gotoLoc> | <speakInfo> | <answer>;