Problem: S1: Earlier in 209 , Sun Quan Sun married Quan ' s younger sister , Lady Sun , to strengthen the alliance between him and Liu Bei .
S2: Earlier in 209 , Sun Quan married Sun Quan 's younger sister Lady Sun to strengthen the alliance between him and Liu Bei .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: yes

Problem: S1: It took place from 23 to 29 April 2010 at the Real Club de Tenis Barcelona , Catalonia , Barcelona , Spain .
S2: It took place from 23 April to 29 April 2010 in the Real Club de Tenis Barcelona in Barcelona , Catalonia , Spain .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: yes

Problem: S1: As a result of this success , other multinational groups such as Unilever , Microsoft , Digital Equipment , Schlumberger or Lazard approached the services of Leclercq 's firm .
S2: As a result of this success , other multinational companies such as Unilever , Microsoft , Digital Equipment , Schlumberger or Lazard have approached the services of Leclercq 's company .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A:
yes