This practice has its roots in the traditions concerning the black caps of the Danish students .
This practice has its roots in the traditions regarding the Danish caps of the black students .

Are these two sentences paraphrases of each other?
no

The Sucevita River is a tributary of the Voievodeasa River in Romania .
The river Sucevita is a tributary of the Voievodeasa River in Romania .

Are these two sentences paraphrases of each other?
yes

A counterclockwise angle in a figure would correspond to one clockwise angle in the other figure .
A clockwise angle in one figure would correspond to a counterclockwise angle in the other .

Are these two sentences paraphrases of each other?
no

The presence of isolobal analog fragments does not mean that the synthezied structures can be desired .
The presence of isolobal - analog fragments does not mean that the desired structures can be synthesized .

Are these two sentences paraphrases of each other?
no