Problem: S1: Coxeter defines other groups with anti-unitary constructions , for example these three . The first was discovered and drawn by Peter McMullen in 1966 .
S2: Coxeter defines with other constructions anti-unitary groups , eg these three : the first was discovered and drawn by Peter McMullen in 1966 .

Do S1 & S2 convey the same information?

A: no

Problem: S1: It is found in Alberta in northern Canada and possibly in Ontario .
S2: It is found in Alberta in northern Canada and possibly Ontario .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Kumutrampatti is a small village near Madurai District ( Gateway to Kottampatti ) in Tamil Nadu .
S2: Kumutrampatti is a small village near Madurai District ( Tor to Kottampatti ) in Tamil Nadu .

Do S1 & S2 convey the same information?

A:
yes