Problem: S1: Hector Crawford was the brother of 3DB manager and administrator Dorothy Crawford , and also brother to Curteis Crawford .
S2: Hector Crawford was the brother of 3DB manager and administrator Dorothy Crawford , and brother of Curteis Crawford .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The orbital data is consistent with the secondary component of either a white dwarf or a red dwarf star .
S2: The orbital data are consistent with the secondary component either a red dwarf or a white dwarf star .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: The series was written by Jim Starlin and drawn by Ron Lim , Ian Laughlin , Al Milgrom , Jack Morelli and Christie Scheele .
S2: The series is written by Jim Starlin and Ron Lim , Ian Laughlin , Al Milgrom , Jack Morelli and Christie Scheele .

Do S1 & S2 convey the same information?

A:
no