Problem: S1: Pier Angeli has two kids and his wife Anna ( Curtis ) is pregnant .
S2: Curtis has two children and his wife , Anna ( Pier Angeli ) is pregnant .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Artzentales is a municipality in the province of Biscay , in the autonomous community of Basque Country , northern Spain..
S2: Artzentales is a municipality in the province of Biscay , in the Autonomous Community of Basque Country , in northern Spain .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Plena was brought to Ponce by blacks who immigrated south from the English-speaking islands north of Puerto Rico .
S2: Plena was brought to Ponce by blacks who had immigrated from the English-speaking islands south of Puerto Rico to the north .

Do S1 & S2 convey the same information?

A:
no