Read the excerpt from Holes. Stanley's father was an inventor. To be a successful inventor you need three things: intelligence, perseverance, and just a little bit of luck. Stanley's father was smart and had a lot of perseverance. Once he started a project he would work on it for years, often going days without sleep. He just never had any luck. In the above excerpt, how did the author support the idea that Stanley's dad "had a lot of perseverance"?