Generate a question that has the following answer: Professor Challenger for the following movie plot: This section needs an improved plot summary. (August 2016) Professor Challenger (Claude Rains), a famed biologist and anthropologist, reports to the London Zoological Society that he has discovered living specimens of supposedly extinct animals, including dinosaurs, on an expedition to the Amazon Basin. When his colleagues dismiss his claims, he challenges the Society to mount another expedition to verify his story. Challenger and his companions travel to an isolated plateau, where they encounter prehistoric creatures and other hazards, and discover the legacy of a previous explorer that reveals the hidden past of one of their team. During a volcanic eruption, they escape from the plateau carrying the egg of a Tyrannosaurus rex. The egg hatches when it is dropped by accident, and Professor Challenger decides to take the infant dinosaur back to London with them.
who is biologist and anthropologist?