Problem: S1: It measures an aperture of ~ 5 cm and it has the spectrum of 1.7 - 17 m .
S2: It has an aperture of ~ 5 cm and it measures the spectrum of 1.7 -- 17 m .

Do S1 & S2 convey the same information?

A: no

Problem: S1: For nearly six weeks , 10 TFS crews attacked Iraqi airfields , communication centers , and military command centers .
S2: For nearly six weeks , 10th TFS crews attacked military airfields , communication centers and Iraqi command centers .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Later on , it was reported that Sunita will enter into an affair with John Michie ( Karl Munro ) .
S2: Later , it was reported that Sunita will start an affair with Karl Munro ( John Michie ) .

Do S1 & S2 convey the same information?

A:
yes