Problem: S1: In February 2007 , Barbara Fischinger performed at the Original Lumigraph in Amsterdam and in Frankfurt in 2012 .
S2: In February 2007 , Barbara Fischinger performed on the original Lumigraph in Amsterdam , and in 2012 in Frankfurt .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: First , because the treatment is affecting the brain , the side effects can be unique and sometimes severe .
S2: First , because the treatment influences the brain , the side effects can be severe and sometimes unique .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Regressive assimilations are caused only by semantic factors , while substitutions take phonological information into account .
S2: Regressive assimilations are caused only by phonological factors , while substitutions take semantic information into account .

Do S1 & S2 convey the same information?

A:
no