Question: Genndy Tartakovsky, is a Russian–American animator, director, storyboard artist, producer, and screenwriter, he's best known for creating which Cartoon Network animated television series, an American comic science fiction animated television series, it was the first of the network's. Cartoon Cartoons?
Sentence (from "Dexter's Laboratory"): He also engages in a bitter rivalry with his neighbor and fellow-genius Mandark.
Relevant evidence: No