Problem: S1: A mechanical nightingale is introduced in '' and is used to replace a real nightingale for a princess .
S2: A real nightingale is introduced in '' and is used to replace a mechanical nightingale for a princess .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The current mayor of Crestview Hills is Paul Meier and the town administrator is Tim Williams .
S2: The current mayor of Crestview Hills is Paul Meier and the city administrator is Tim Williams .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: It is native to Central and Southern Europe from the British Isles , Turkey , the East to Portugal , Ukraine and the Baltic States .
S2: It is native to central and southern Europe from the British Isles , Turkey , east to Portugal , Ukraine and Baltic States .

Do S1 & S2 convey the same information?

A:
yes