Problem: S1: He frequently observed ballet performances at the Paris Opera and often attended lessons at the dance school .
S2: He frequently attended ballet performances at the Paris Opera and often observed teaching at the dance school .

Do S1 & S2 convey the same information?

A: no

Problem: S1: On May 6 , 2016 it was announced that Palafox signed to New York Cosmos B of the National Premier Soccer League .
S2: On 6 May 2016 , it was announced that Palafox had signed the National Premier Soccer League after New York Cosmos B .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: KSR-3 ( South Korean sounding rocket-3 ) is a Korean sounding rocket designed by KARI .
S2: KSR-3 ( Korean Sounding Rocket-3 ) is South Korean sounding rocket designed by KARI .

Do S1 & S2 convey the same information?

A:
no