Problem: S1: Tipsarevic started playing tennis at the age of six , and at the age of nine he began with the Russian coach Roman Savochkin at the New Belgrade Tennis Club .
S2: Tipsarevic began playing tennis at age six , and at the age of nine , started playing at the New Belgrade Tennis Club with Russian coach Roman Savochkin .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: yes

Problem: S1: According to the United States Census Bureau , Irvine has a total area of which land and , or 5.13 % , is water .
S2: According to the United States Census Bureau , Irvine has a total area of , of which is land and , or 5.13 % , is water .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A: yes

Problem: S1: In 219 , while Cao Ren was attacking Fancheng , Sun Quan agreed to send reinforcements to help the entrapped Guan Yu .
S2: In 219 , while Cao Ren Fancheng was attacking , Sun Quan agreed to send reinforcements to help the enclosed Guan Yu .

Do S1 & S2 convey the same information?

OPTIONS:
- no
- yes

A:
yes