Problem: S1: Most pre- 1976 series produced by CBS or distributed by CBS Films were later distributed by Viacom and Paramount Television .
S2: Most of the series produced by CBS or distributed by CBS films before 1976 were later distributed by Viacom and Paramount Television .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: He pitched it to several studios , but each one of them rejected it for different reasons .
S2: He presented it to different studios , but each of them rejected it for several reasons .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The Indus cities are noted for their elaborate planning , baked brick houses , urban drainage systems , water supply systems , and clusters of large non-residential buildings .
S2: The Indus cities are known for their urban planning , baked brick houses , elaborate drainage systems , water supply systems and clusters of large non-residential buildings .

Do S1 & S2 convey the same information?

A:
no