Complex sentence: The, 10-station Purple Line, and the, 9-station Green Line, opened on May 23,2015, though the final two stations of the Green Line did not open until January 11,2017.
Split into simpler sentences: The, 10-station Purple Line, and 7 stations of the, 9-station Green Line opened on May 23,2015. The final two stations of the Green Line opened on January 11,2017.