Problem: S1: It was built in 1974 and widened , dredged with gravel roads on each side of the channel .
S2: It was built and widened in 1974 , with gravel roads dredged on each side of the canal .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The region was the cradle of various ancient civilizations such as Ancient China , ancient Japan , ancient Korea , and the Mongol Empire .
S2: The region was the cradle of various ancient civilizations , such as ancient China , old Korea , ancient Japan , and the Mongolian Empire .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: This species is present in Italy , France and in Switzerland .
S2: This species is present in Switzerland , France and Italy .

Do S1 & S2 convey the same information?

A:
yes