Problem: S1: The architect of the initial station was Nikolai Kolli who worked with Le Corbusier on the nearby Tsentrosoyuz building .
S2: The architect of the first station was Nikolai Kolli , who worked with Le Corbusier on the nearby Tsentrosoyuz building .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: In 1720 he returned to Kaufbeuren , but became Prime Minister of Augsburg in 1723 .
S2: He returned to Kaufbeuren in 1720 , but became parish minister of Augsburg in 1723 .

Do S1 & S2 convey the same information?

A: no

Problem: S1: However , the Tang did not proceed any further after the battle , and the Arabs retained their Central Asian territories until the An Lushan rebellion .
S2: The Arabs , however , did not proceed after the battle , and the Tang retained their Central Asian territories until the rebellion in An Lushan .

Do S1 & S2 convey the same information?

A:
no