[lemma=and] [tag=VBZ] [lemma=expel] [lemma=gas] [word=□]
[lemma=and] [tag=VBZ] [lemma=expel] [lemma=gas] [word=at]
An artist 's illustration depicts a quasar in the center of a galaxy that has turned on and is expelling gas at high speeds in a galactic superwind .