#JSGF V1.0;
grammar bebot_demo;
public <statement> = [tobi] [please] ( <command> | <teach> ) [please] [tobi];

<command> = <clean> | <party>;
<clean> = clean up | start cleaning;
<party> = [the] party starts | party beginning;
<teach> = ( (this is [a | an | the] ) | ( these are [the] ) ) <object>;
<object> = [other] ( trashbin  );