Question:
S1: The technology-laced Nasdaq Composite Index < .IXIC > declined 16.68 points , or 1.01 percent , at 1,636.94 .
S2: The broader Standard & Poor 's 500 Index .SPX eased 7.57 points , or 0.76 percent , at 990.94 .
Are S1 and S2 the same?
Answer:
no

Question:
S1: Police said three of them had also been detained last week and held for two days as suspects over bomb attacks in Jakarta and the North Sumatran city of Medan .
S2: Police said three of them had also been detained last week and held for two days as suspects over recent bomb attacks .
Are S1 and S2 the same?
Answer:
yes

Question:
S1: U.S. law enforcement officials are sneering at Dar Heatherington 's version of the events which thrust her into the public spotlight .
S2: U.S. law enforcement officials are sneering at Dar Heatherington 's version of of the events -- including a police conspiracy to discredit her -- which thrust her into the public spotlight .
Are S1 and S2 the same?
Answer:
yes

Question:
S1: Martin , 58 , will be freed today after serving two thirds of his five-year sentence for the manslaughter of 16-year-old Fred Barras .
S2: Martin served two thirds of a five-year sentence for the manslaughter of Barras and for wounding Fearon .
Are S1 and S2 the same?
Answer:
no