Complex sentence: On 2 May 2017, Radiohead announced a 20th-anniversary "OK Computer" reissue, "OK Computer OKNOTOK 1997 2017," featuring three previously unreleased tracks, including "I Promise".
Split into simpler sentences: On 2 May 2017, Radiohead announced a 20th-anniversary "OK Computer" reissue, "OK Computer OKNOTOK 1997 2017". The reissue includes three previously unreleased tracks, including "I Promise".