Problem: S1: The Penchala River is a river in Selangor , Malaysia It runs from Kampung Sungai Penchala to the sound - river near Petaling Jaya .
S2: The Penchala River is a river in Selangor , Malaysia . It runs from Kampung Sungai Penchala to Klang River near Petaling Jaya .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: She worked on processes of chemical extraction of metal complexes and described the chemical and physical properties of solvent species in an organic solvent .
S2: She worked on processes of chemical extraction of metal complexes and described the chemical and physical properties of solvent types in an organic solvent .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: In Sunnyside , west of the centre of the city , the path where the old promenade runs , and parallel to the current one is .
S2: In Sunnyside , west of the centre of the city , the trail is where the old boardwalk runs , and parallel to the current one .

Do S1 & S2 convey the same information?

A:
yes