He has also recorded duets with Daniel Santos , Olimpo Cardenas and Alci Acosta .
He also recorded duets with Alci Acosta , Olimpo Cardenas , and Daniel Santos .

Are these two sentences paraphrases of each other?
yes

RAF Ash has been sold and the site was closed in July 1998 and is now used by The Bunker , an Internet hosting company , as a secure server farm .
RAF Ash was closed and the site sold in July 1998 . It is now used as a secure server farm by The Bunker , an Internet hosting company .

Are these two sentences paraphrases of each other?
no

It is important to achieve the quantum regime of the mechanical oscillator , where thermal noise effects on the device become negligible .
It is important for reaching the thermal regime of the quantum oscillator , where mechanical noise effects on the device become negligible .

Are these two sentences paraphrases of each other?
no

The notes issued by the three commercial banks are printed by Hong Kong Note Printing Limited in Hong Kong .
Banknotes printed by the three commercial banks are issued in Hong Kong by Hong Kong Note Printing Limited .

Are these two sentences paraphrases of each other?
no