Complex sentence: Fallen Kingdom is an upcoming American science fiction adventure film, the sequel to the 2015 film "Jurassic World", and the fifth installment in the "Jurassic Park" film series.
Split into simpler sentences: Fallen Kingdom is an upcoming American science fiction adventure film. It is a sequel to the 2015 film "Jurassic World" and is the fifth installment in the "Jurassic Park" film series.