Problem: S1: RAF Ash has been closed and the site was sold in July 1998 and is now used by The Bunker , an Internet hosting company , as a secure server farm .
S2: 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 .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Sigmatel was sold to Freescale Semiconductor later .
S2: Later on , Freescale Semiconductor was sold to Sigmatel .

Do S1 & S2 convey the same information?

A: no

Problem: S1: He was born in Sarlat in the province of Dordogne and studied law in Toulouse and Paris .
S2: Tarde was born in Sarlat in the province of Dordogne , and he studied law at Toulouse and Paris .

Do S1 & S2 convey the same information?

A:
yes