Problem: (1) An alloy may be a single solution of metal elements ( a solid phase ) or a mixture of metallic phases ( two or more solutions ) .
(2) An alloy may be a single solution of metal elements ( a fixed phase ) or a mixture of metallic phases ( two or more solutions ) .

Do (1) and (2) mean the same thing?
A: yes

Problem: (1) It currently runs from Davisville Avenue , south of Yonge Street , northwest to the Allen Road and Eglinton Avenue West .
(2) It currently runs from Davisville Avenue , to the south of Yonge Street , northwest of Allen Road and Eglinton Avenue West .

Do (1) and (2) mean the same thing?
A: yes

Problem: (1) It was written by Michael Kaplan and directed by John Sanborn .
(2) Written by John Sanborn , it was directed by Michael Kaplan .

Do (1) and (2) mean the same thing?
A: no

Problem: (1) However , the generic Lorentz-invariant form of the matrix element for electromagnetic current interaction is known ,
(2) However , the generic Lorentz-electromagnetic current form of the matrix element for the invariant interaction is known ,

Do (1) and (2) mean the same thing?
A:
no