Problem: S1: Two other authors have since managed this -- Peter Carey ( in 1988 and 2001 ) and Hilary Mantel ( in 2009 and 2012 ) .
S2: Since then , two other authors have managed this Hilary Mantel ( 1988 and 2001 ) and Peter Carey ( 2009 and 2012 ) .

Do S1 & S2 convey the same information?

A: no

Problem: S1: CMA adds an anthropological dimension to traditional critical approaches , thereby avoiding a top-down perspective .
S2: The CMA adds an anthropological dimension to traditional critical approaches , thereby avoiding a top-down perspective .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: If the first upper diagonal is with 2 multiplied main diagonal , it is of the second kind .
S2: If the main diagonal is the first upper diagonal multiplied by 2 , it is of the second kind .

Do S1 & S2 convey the same information?

A:
no