Is the left tree thinner than the right tree?
No, it isn't.
Is the brown boots cleaner than the black boots?
Yes, it is.
Is the left sneakers dirtier than the right sneakers?
Yes, it is.
Is the left shirt dirtier than the right shirt?
Yes, it is.
Is the black hat prettier than the red hat?
No. It isn't.
Is the orange ball older than the black and white ball?
No, it isn't.
Is the green book thicker than the red book?
No, it isn't.