Question: what is name of the first episode of the season of American animated television series "SpongeBob SquarePants" which was aired on Nickelodeon from February 19, 2007 to July 19, 2009, and contained 20 episodes?
Sentence (from "List of SpongeBob SquarePants guest stars"): He began developing "SpongeBob SquarePants" into a television series in 1996 upon the cancellation of "Rocko's Modern Life", which Hillenburg directed.
Relevant evidence: No