What is a sandworm?
A sandworm is a creature described by Frank Herbert in his science-fiction book Dune. Sandworms are huge and aggressive and live in the sand seas of planet Arrakis.
Instruction: What is a sandworm?
Context: 
Response: A sandworm is a creature described by Frank Herbert in his science-fiction book Dune. Sandworms are huge and aggressive and live in the sand seas of planet Arrakis.