Detailed Instructions: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Problem:WASHINGTON (CNN) -- Two Chinese fishing vessels came "dangerously close" to a U.S. military ship in the Yellow Sea off the coast of China last week -- the fifth such incident in the past few months, two U.S. officials told CNN Tuesday. The USNS Victorious is an unarmed ocean surveillance ship operated by a civilian crew. The officials -- who could not be identified because the incident has not yet been formally announced -- said the two Chinese boats approached the USNS Victorious, a military sealift command ship, in international waters Friday in the Yellow Sea, which lies between China and North and South Korea.Chinese boats force U.S. ship to come to dangerous sudden stop, U.S. officials sayThe fishing boats repeatedly come close to USNS Victorious, officials sayUSNS Victorious authorized to do listening operations in international watersThe Victorious was involved in another incident in Yellow Sea in March 
 Question:The _ claim much of those waters as an economic zone over which they have sole authority.
Solution:
Chinese