Problem: S1: Coopers Plains train station on the south coast railway line ( now the Beenleigh line ) opened in 1885 .
S2: Coopers Plains railway station on the Beenleigh railway line ( now the South Coast line ) opened in 1885 .

Do S1 & S2 convey the same information?

A: no

Problem: S1: A systematic study of category theory then allows us to prove general results about any of these types of mathematical structures from the axioms of a category .
S2: A systematic study of category theory then allows us to prove general results about each of these types of mathematical structures from the axioms of a category .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: He went to Al and said , '' you have lost a father '' and '' I 've lost a son '' .
S2: He went to Al and said : '' You have lost a father '' and '' I lost a son '' .

Do S1 & S2 convey the same information?

A:
yes