Problem: S1: Szabo 's method of sybilizing protection , however , was vulnerable to double attacks .
S2: However , Szabo 's method of double-spending protection was vulnerable to Sybil attacks .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Mabanda is a city located close to the southern tip of Tanzania , near the border with Burundi .
S2: Mabanda is a city near the southernmost tip of Burundi , close to the border with Tanzania .

Do S1 & S2 convey the same information?

A: no

Problem: S1: The combination of blepharospasmodic contractions and oromandibular dystonia is called cranial dystonia or meige - syndrome .
S2: The combination of blepharospasmodic contractions and oromandibular dystonia is called cranial dystonia or Meige 's syndrome .

Do S1 & S2 convey the same information?

A:
yes