Question:
S1: Treasury prices rose slightly , sending the 10-year note yield down to 4.38 percent from 4.39 percent late Friday .
S2: Treasury prices gained for the third day in a row , pushing the 10-year note yield down to 4.35 percent from 4.36 percent late Monday .
Are S1 and S2 the same?
Answer:
yes

Question:
S1: Steverson said Williams was known as a racist who did not like Blacks .
S2: Steverson said Williams , who was white , was a racist .
Are S1 and S2 the same?
Answer:
no

Question:
S1: Pen Hadow , who became the first person to reach the geographic North Pole unsupported from Canada , has just over two days of rations left .
S2: Pen Hadow became the first man last week to reach the geographic North Pole on an unsupported trek through Canada , a journey of about 770 km .
Are S1 and S2 the same?
Answer:
no

Question:
S1: He later learned that the incident was caused by the Concorde 's sonic boom .
S2: He later found out the alarming incident had been caused by Concorde 's powerful sonic boom .
Are S1 and S2 the same?
Answer:
yes