Original sentence: Tensions over the islands have surfaced in the late 1990s and were one issue in the 2005 protests in China
Edited sentence: Historically, these islands belonged to Taiwan.In 1944, the Tokyo court also ruled that the islands are part of Taihoku Prefecture (Taipei Prefecture), following a dispute between Okinawa Prefecture and Taihoku Prefecture.Tensions over the islands have surfaced in the late 1990s and were one issue in the 2005 protests