TASK DEFINITION: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
PROBLEM: The boundaries between perennial , intermittent , and ephemeral channels are not defined , and subject to a variety of identification methods adopted by local governments , academics , and others with a need to classify stream-flow permanence .

SOLUTION: The differences between perennial , intermittent , and ephemeral streams are not exact and can change if different measures are used by different groups .

PROBLEM: China Airlines Flight 611 was a regularly scheduled passenger flight from Chiang Kai-shek International Airport ( now Taoyuan International Airport ) in Taiwan to Hong Kong International Airport in Hong Kong .

SOLUTION: China Airlines Flight 611 was a scheduled international passenger flight from Taipei to Hong Kong , China .

PROBLEM: Takamatsu ( 高松市 , Takamatsu-shi , -RSB- ) is a city located in central Kagawa Prefecture on the island of Shikoku in Japan , and is the capital city of the prefectural government .

SOLUTION:
Takamatsu ( 高松市 , Takamatsu-shi ) is the capital city of Kagawa Prefecture in Japan .