Problem: S1: Lake Arrowhead is an artificial lake in the Mojave River on the Little Bear Creek , a tributary of Deep Creek and San Bernardino mountains .
S2: Lake Arrowhead is an artificial lake in the San Bernardino Mountains on the Little Bear Creek , a tributary of Deep Creek and the Mojave River .

Do S1 & S2 convey the same information?

A: no

Problem: S1: It is Goines 's first published work and was written before '' Dopefiend '' but was written in 1972 , after '' Dopefiend '' was released .
S2: It is Goine 's first published work and was written before '' Dopefiend '' , but was written in 1972 after '' Dopefiend '' was published .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: In May 1955 , a new Balkan Express was started from Vienna via Graz and Belgrade ( excluding Bulgaria ) to Athens and Istanbul .
S2: In May 1955 a new Balkan Express was launched from Bulgaria via Vienna ( avoiding Graz and Belgrade ) to Athens and Istanbul .

Do S1 & S2 convey the same information?

A:
no