Problem: S1: In 1923 , Shach married Meltzer 's niece , Guttel Gilmovski .
S2: In 1923 , Shach Meltzer 's niece , Guttel Gilmovski , was married .

Do S1 & S2 convey the same information?

A: no

Problem: S1: In 1956 , she worked with the orchestras of Christo Vuchkov and Dimitar Ganev for Big Orchestra Concert Directorate conductors , which were Boris Simeonov and Emil Georgiev .
S2: In 1956 , she worked with the orchestras of Christo Vuchkov and Dimitar Ganev for Big Orchestra Concert Directorate conductors of which were Boris Simeonov and Emil Georgiev .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The secretary of the party became Hardie , while George Mitchell was the first treasurer and Cunninghame Graham was the president .
S2: Hardie became Secretary of the Party , while Cunninghame Graham was the first treasurer and George Mitchell was the president .

Do S1 & S2 convey the same information?

A:
no