Because many of the examples seem to show that the system easily misunderstands certain grammatical implications (prepositional relations, etc), I wonder if it

Because many of the examples seem to show that the system easily misunderstands certain grammatical implications (prepositional relations, etc), I wonder if it would benefit from of different sort of input system in which the relationships of the objects in the desired image are more concretely defined, something more like a tree graph perhaps? Or perhaps this would be very difficult to implement? At the very least, seems it would be useful for users to edit a given output so that it can be continually tweaked, keeping what they like about an image (e.g. object layout, proportions, color scheme) while editing other aspects.