Problem: S1: But its southern border along the Douro has made the region susceptible to Spanish and Moorish conflict .
S2: But , it 's Spanish and Moorish border along the Douro made the region susceptible to southern conflict .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: no

Problem: S1: Having tried his luck unsuccessfully on the Toowoomba gold fields , he moved to Gympie in 1868 .
S2: He moved to Toowoomba in 1868 after having tried his luck on the gympic gold fields unsuccessfully .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: no

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?

OPTIONS:
- no
- yes

A:
no