Four small children playing in the courtyard of a large building made out of clay or sand.
Four children who live in a large building are in the courtyard playing.
Just because the kids are playing at the building doesn't mean they live there.
Just because the children are playing the courtyard of a large building doesn't mean they live there.
Four small children playing in the courtyard of a large building made out of clay or sand doesn't mean that they live in a large building.