Leave the painting
on the train. Those lost property officials will know what to do with it.
Take the painting
back to your hotel with you.
You hide the painting behind your back very successfully, although that is in part due to the fact that for the few minutes it takes to get to your stop no-one else enters your carriage.
The train pulls up and the doors open.
You can:
Leave the painting
on the train. Those lost property officials will know what to do with it.
Take the painting
back to your hotel with you.