Problem: S1: Arthur decides not to tell Dick of his purchase .
S2: Dick decides to not to tell Arthur of his purchase .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The most active treatment at that time was the preferred medication .
S2: The most active treatment method at the time was preferred medication .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: In winter the weather is moderately cold , in the summer warm .
S2: The weather in winter is moderately warm and cold in summer .

Do S1 & S2 convey the same information?

A:
no