The new style has also been encouraged by changes in economic order and the social structure .
The new style was also encouraged by changes in the social order and the economic structure .

Are these two sentences paraphrases of each other?
no

All smaller chambers , once they are uninhabited , are used in the method described above to regulate the depth .
All of the smaller chambers , once uninhabited , are used in the method described above to regulate depth .

Are these two sentences paraphrases of each other?
yes

The 9th Highland Brigade was connected from the 3rd Infantry Division to the 1st Infantry Division .
The 9th Highland Brigade was attached to the 1st Infantry Division from the 3rd Infantry Division .

Are these two sentences paraphrases of each other?
yes

For theories at the level of reverse-order arithmetic , the second mathematics program has much to say .
For theories at the level of second-order arithmetic , the program for reverse mathematics has much to say .

Are these two sentences paraphrases of each other?
no