TASK DEFINITION: You are given two sentences(Sentence1 and Sentence2). Answer "Yes" if these sentences are a paraphrase of one another, otherwise answer "No".
PROBLEM: Sentence1: " Our policies are well-known , and I 'm not aware of any changes in policy " on Iran , Powell said ., Sentence2: " Our policies are well known and I 'm not aware of any changes , " Secretary of State Colin Powell said Tuesday .

SOLUTION: Yes

PROBLEM: Sentence1: Consumers who said jobs are difficult to find jumped from 29.4 to 32.6 , while those claiming work was plentiful slipped from 13 to 12.6 ., Sentence2: Consumers who said jobs are difficult to find jumped to 32.6 from 29.4 , while those saying work was plentiful slipped to 12.6 from 13 in April .

SOLUTION: Yes

PROBLEM: Sentence1: The worm attacks Windows computers via a hole in the operating system , an issue Microsoft on July 16 had warned about ., Sentence2: The worm attacks Windows computers via a hole in the operating system , which Microsoft warned of 16 July .

SOLUTION:
Yes