dialogue: YOU: i need both balls and one book <eos> THEM: can i keep the hat and both books or the hat and both balls ? <eos> YOU: you can have the hat and one book <eos> THEM: how about the hat and a ball ? <eos> YOU: i cant give you a ball <eos> THEM: hat and two books then ? <eos> YOU: <selection>
output: item0=0 item1=0 item2=2 item0=2 item1=1 item2=0