Problem: S1: It was destroyed in 1446 and rebuilt and abandoned in 1551 .
S2: It was destroyed and rebuilt in 1446 , and abandoned in 1551 .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The tiny institutions they founded would not have seemed to them like universities -- they were small and did not offer the higher degrees in medicine and theology .
S2: The tiny institutions they founded would not have appeared to them like universities -- they were small and did not offer the higher qualifications in medicine and theology .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: After many delays , the segment from Kaduna to Abuja ( 187 km ) opened officially on 26 July 2016 .
S2: The segment from Kaduna to Abuja ( 187 km ) was officially opened after many delays on 26 July 2016 .

Do S1 & S2 convey the same information?

A:
yes