Detailed Instructions: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Problem:What covers the South China Sea, Context: The BeiDou-2 system began offering services for the Asia-Pacific region in December 2012. At this time, the system could provide positioning data between longitude 55°E to 180°E and from latitude 55°S to 55°N.
Solution:
BeiDou-2