We see elderly people playing cards at a retiring home, but there are no cards in their hands. We see a nurse pushing an elderly woman in a wheelchair, but there is no wheelchair. We see a doctor checking on a child, but but there is no sthetoscope. We see children playing on a see-saw in a park, but there is no see-saw. We see a girl on a swing, but there is no swing. We see a boy riding a bike, but there is no bike.