Complex sentence: Trevorrow and Connolly maintained the basic storyline of a functioning dinosaur theme park, while also keeping the ideas of a homicidal dinosaur that has to be stopped, and a human who has a relationship with "Velociraptors".
Split into simpler sentences: Trevorrow and Connolly maintained the basic storyline of a functioning dinosaur theme park. Two story ideas from earlier drafts were also kept: a homicidal dinosaur that has to be stopped, and a human who has a relationship with "Velociraptors".