Problem: S1: It was also recorded by Guy Lombardo and His Royal Canadians Orchestra and the vocal group The Three Suns in the United States .
S2: It was also recorded by the Royal Canadians and His Guy Lombardo orchestra and the vocal group The Three Suns in the United States .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Only one percent of blue diamonds are of this type and most are natural to gray .
S2: Only one percent of blue diamonds are of this type , and most are natural to grey .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Bergamo railway station is connected to Milan , Lecco , Cremona , Treviglio , Brescia and Monza with regional trains operated by Trenord .
S2: The railway station of Bergamo is connected with the regional trains operated by Trenord to Milan , Lecco , Cremona , Treviglio , Brescia and Monza .

Do S1 & S2 convey the same information?

A:
yes