Problem: S1: The Sambata River is a tributary of the Piatra Caprei River in Romania .
S2: The river Sambata is a tributary of the River Piatra Caprei in Romania .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Together with Alicia Alberto Cortina has three sons .
S2: Alberto Cortina has three sons , Alicia :

Do S1 & S2 convey the same information?

A: no

Problem: S1: It was not long after Wyman joined the group that Watts took over the drums .
S2: It was not long after Watts joined the group that Wyman took over the percussion .

Do S1 & S2 convey the same information?

A:
no