Complex sentence: Deep Space Nine (sometimes abbreviated to "DS9") is a science fiction television series set in the "Star Trek" universe in the Milky Way galaxy, in the years 2369--2375.
Split into simpler sentences: Deep Space Nine (sometimes abbreviated to "DS9") is a science fiction television series set in the "Star Trek" universe. The show is set in the Milky Way galaxy, in the years 2369--2375.