Problem: S1: Various high-ranking positions were occupied at Yukos Oil Company and its subsidiary , the Menatep Group .
S2: Nevzlin occupied various high-ranking positions at Group Menatep and its subsidiary , the Yukos Oil Company .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The following night , Delirious set aside his problems with Danielson to challenge Pearce .
S2: The next night , Delirious put aside his problems with Pearce to challenge Danielson .

Do S1 & S2 convey the same information?

A: no

Problem: S1: He has been trained by his grandfather , Nick Dakin , and is now trained by Geoff Barraclough .
S2: He has been trained by his grandfather , Geoff Barraclough , and is now coached by Nick Dakin .

Do S1 & S2 convey the same information?

A:
no