Problem: S1: On 7 July 2011 , Russell was traded for Kris Russell on the Columbus Blue Jackets and joined his brother Michael Blunden with the organization Blue Jackets .
S2: On July 7 , 2011 , Russell was traded for Michael Blunden as Columbus Blue Jackets and joined his brother Kris Russell with the Blue Jackets organization .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The Russian villain is , however , an interesting and sometimes original threat .
S2: The Russian villain , however , is an interesting and sometimes original menace .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: When toxic concentrations are achieved , there may be a delay of one or two days before the maximum toxicity occurs .
S2: When maximum concentrations are reached , there may be a delay of one or two days before toxic toxicity occurs .

Do S1 & S2 convey the same information?

A:
no