There are two types of Hilbert R - Trees : one for dynamic databases and one for static databases .
There are two types of Hilbert R-trees : one for dynamic databases , and one for static databases .

Are these two sentences paraphrases of each other?
yes

It borders Kariobangi and Dandora to the east , Moi Air Base to the south , Mathare to the north and Eastleigh to the west .
It is bordered by Kariobangi and Dandora to the east , Moi Air Base to the south , Mathare to the north and Eastleigh to the west .

Are these two sentences paraphrases of each other?
yes

Allan Stewart ( 1865 -- 1951 ) was a Scottish painter who built his reputation on romantic , historical and especially military paintings as well as landscapes and portraits .
Allan Stewart ( 1865 -- 1951 ) was a Scottish painter who built his reputation on romantic , historical and particularly military paintings as well as landscapes and portraits .

Are these two sentences paraphrases of each other?
yes

After his death , the atheistic element of communism would be stepped up in some Marxist movements .
After his death , the Marxist element of communism would be strengthened in some atheistic movements .

Are these two sentences paraphrases of each other?
no