Where did I put the nail?
Placed on the floor at the lower right corner of the red carpet, beside the bookshelf.
Placed on the floor at the center of the red carpet, under the table.
Placed on the floor at the upper left corner of the red carpet, next to the window.
Placed on the floor at the lower left corner of the red carpet, behind the black bicycle seat.
Placed on the floor at the upper right corner of the red carpet, near the door.