A same meaning or not problem:
Szabo 's method of double protection was , however , vulnerable to Sybil attacks .
However , Szabo 's method of Sybil-spending protection was vulnerable to double attacks .
****
[A]: no

A same meaning or not problem:
He was the second son of Leonor Rodrigues and Mrs. Gil Aires born .
He was the second born son of Gil Aires and wife Leonor Rodrigues .
****
[A]: no

A same meaning or not problem:
He was also employed by CBS Sports as a regional CBS NFL and CBS NBA announcer from 1976 to 1979 , after which he moved to NBC .
He was also employed by NBC as a regional CBS NFL and CBS NBA announcer from 1976 to 1979 , after which he changed to CBS Sports .
****
[A]: no

A same meaning or not problem:
Mount Sis is also a plateau which was called in Turkey '' Sis Dag Yaylas '' .
Mount Sis also has a plateau called '' Sis Dag Yaylas '' in Turkey .
****
[A]:
yes