Problem: S1: Isabel Kabra never left his side , until Irina assigned her to a mission in Helsinki .
S2: Isabel Kabra never left his side until Irina sent her to a mission in Helsinki .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The network previously repeated a translator in Waterbury , W12BH ( Channel 12 ) , which WEDY operates directly .
S2: The network previously run a translator in Waterbury , W12BH ( Channel 12 ) , which repeated WEDY directly .

Do S1 & S2 convey the same information?

A: no

Problem: S1: A systematic study of category theory then allows us to prove mathematical results about any of these types of general 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:
no