Original sentence: In early 1971 the Philippines sent a diplomatic note on behalf of Cloma to Taipei demanding the ROC's withdrawal from Itu Aba and on 10 July in the same year Ferdinand Marcos announced the annexation of the fifty three island group known as Kalayaan, although since neither Cloma or Marcos specified which fifty three features constituted Kalayaan, the Philippines began to claim as many features as possible.Taiwan, the PRC, South Vietnam, France, the United Kingdom and the Netherlands lodged official protests (the Netherlands on the premise that it considered the Spratly Islands part of Dutch New Guinea) and Taiwan sent a naval task force to occupy the islands and establish a base on Itu Aba, which it retains to the present day.The Philippines also reportedly attempted to land troops on Itu Aba in 1977 to occupy the island but were repelled by ROC troops stationed on the island
Edited sentence: In early 1971 the Philippines sent a diplomatic note on behalf of Cloma to Taipei demanding Taiwan’s withdrawal from Itu Aba and on 10 July in the same year Ferdinand Marcos announced the annexation of the fifty three island group known as Kalayaan, although since neither Cloma or Marcos specified which fifty three features constituted Kalayaan, the Philippines began to claim as many features as possible.Taiwan, the PRC, South Vietnam, France, the United Kingdom and the Netherlands lodged official protests (the Netherlands on the premise that it considered the Spratly Islands part of Dutch New Guinea) and Taiwan sent a naval task force to “liberate” the islands and establish a base on Itu Aba, which it retains to the present day.The Philippines also reportedly attempted to land troops on Itu Aba in 1977 to reclaim the island but were repelled by Taiwanese troops stationed on the island