premise: 2009, Year of Us is the third extended play (EP) by South Korean boy group Shinee. It consists of six tracks and it incorporates alternative rock and hip-hop music genres. The digital version of the album was released on October 19, 2009, with a physical release on October 22. The title track, "Ring Ding Dong" was released on October 14, 2009 through various music sites.
hypothesis: Year of Us was released over five days.
reason: The digital version was released on October 19, 2009 and the physical release occurred three days later. 