Problem: S1: Butler County is represented in the U.S. Senate by U.S . Senators Claire McCaskill ( Democrat ) and Roy Blunt ( Republican ) .
S2: Butler County is represented in the U.S. Senate by US Senators Roy Blunt ( Democrat ) and Claire McCaskill ( Republican ) .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The river Gorova is a tributary of the river Barzava in Romania .
S2: The river Barzava is a tributary of the River Gorova in Romania .

Do S1 & S2 convey the same information?

A: no

Problem: S1: This time the vocals were presented by Matti Auerkallio and the EP by Pirkka Rannali was mastered .
S2: This time the vocals were performed by Matti Auerkallio , and the EP was mastered by Pirkka Rannali .

Do S1 & S2 convey the same information?

A:
yes