Yeah, there's definitely some previous knowledge of the kinds of objects it's inferring, which is used to deduce the parts. Look at the chairs' legs, where it'

Yeah, there's definitely some previous knowledge of the kinds of objects it's inferring, which is used to deduce the parts. Look at the chairs' legs, where it's transforming the flat base of the rotating chair into something that looks as wheels, and where it's completely missing the bars connecting the legs in the second tall chair.