Nathan entered the playroom. Nathan exited the playroom. William entered the hall. Sophia entered the hall. The watermelon is in the blue bathtub. Sophia exited the hall. William moved the watermelon to the red cupboard. William exited the hall. Sophia entered the hall.
William look for the watermelon in the red cupboard.
 William look for the watermelon to the blue_bathtub
 William look for the watermelon to the red_cupboard