Problem: S1: The audio companion for live concert was released on January 29 , 2008 as a digital album on iTunes .
S2: The audio companion to the digital concert was released on 29 January 2008 as a live album at iTunes .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The Doba River is a tributary of the River Crisul Mic in Romania .
S2: The Crisul Mic river is a tributary of the River Doba in Romania .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Damian Smith married Mayer in January 2001 .
S2: In January of 2001 , Mayer married Damian Smith .

Do S1 & S2 convey the same information?

A:
yes