This is an obvious figure ground relationship because the train is the main focus.

This is an obvious figure ground relative because the rollercoaster is the main focus.

this is an obvious figure ground relationship because it is clear what the focus is.

This is an ambiguous ground relationship because the glass makes it difficult to find the main focus.

This is an ambiguous- ground relationship because it isn’t clear whether the person or the train is the main focus.

This is an obvious ambiguous – ground relationship because the buildings and people make it difficult to see what the focus is.