Task: Text Matching
Input (English): Sentence1: Secretary of State Colin Powell designated the Chechen leader believed responsible for last year 's hostage standoff in a Moscow theater as a threat to U.S. security Friday ., Sentence2: U.S. Secretary of State Colin Powell on Friday designated Chechen rebel leader Shamil Basayev a threat to the security of the United States and to U.S. citizens .
Output (English): Yes