Complex sentence: Several original series emerged from the project, giving the company their first smash hits since "The Smurfs" and the first show based on a "What a Cartoon" short was Genndy Tartakovsky's "Dexter's Laboratory".
Split into simpler sentences: Several original series emerged from the project, giving the company their first smash hits since "The Smurfs". The first series based on a "What a Cartoon" short was Genndy Tartakovsky's "Dexter's Laboratory".