Problem: S1: The Orbai River is a headwater of the Ojdula River in Romania .
S2: The Ojdula River is a source of the Orbai River in Romania .

Do S1 & S2 convey the same information?

A: no

Problem: S1: It is found only in Lake Dianchi and its tributaries in Yunnan , China .
S2: It is only found on Dianchi Lake and its tributaries in Yunnan , China .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: William Henry Henry Harman was born on February 17 , 1828 in Waynesboro , Virginia , with his parents Lewis and Sally ( Garber ) Harman .
S2: He was born on February 17 , 1828 in Waynesboro , Virginia , and his parents were William Henry Harman and Sally ( Garber ) Harman .

Do S1 & S2 convey the same information?

A:
no