Problem: S1: Hippotion moorei is a moth of the Sphingidae family , known from dry areas from northern Somalia to Ethiopia and Tanzania .
S2: Hippotion moorei is a moth of the family Sphingidae . It is known from dry areas from northern Somalia to Ethiopia and Tanzania .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Lars Rehmann defeated Rehmann 6 -- 4 , 3 -- 1 ( Greg Rusedski retired )
S2: Greg Rusedski defeated Lars Rehmann 6 -- 4 , 3 -- 1 ( Rehmann is retired )

Do S1 & S2 convey the same information?

A: no

Problem: S1: In a solid state , it appears as a white powder , but when heated it forms a liquid crystal .
S2: In a liquid state it appears as white powder , but when it is heated , it forms a solid crystal .

Do S1 & S2 convey the same information?

A:
no