sentence: The 21st of April EEUU denies Spanish sovereignty of Cuba . The 23rd of April , Spain sends the Memorandum to several nations and on the 25th , the USA declares war on Spain .
modified: The 21st of April EEUU denies the Spanish sovereignty over Cuba , the 23rd of April Spain sends the Memorandum to several nations and the 25th USA declares the war to Spain .
transformation: DET, PREP, PUNCT, PUNCT, PREP, OTHER, DET, PREP