Assertion: necker cube | /r/HasProperty | the one
Facets:
Source sentences:
text: This is an example of two identical necker cubes, the one on the left showing an intermediate object (blue bar) going in "down from the top" while the one on the right shows the object going in "up from the bottom" which shows how the image can change its perspective simply by changing which face (front or back) appears behind the intervening object.