Problem: Named for its colour, originally called Greek and prized as a paint pigment, is the mixture of compounds of what?
Answer: copper

Problem: In the Bible who became leader of the Israelites after the death of Moses?
Answer: joshua

Problem: What is the name of the cow in the television series 'The Magic Roundabout'?
Answer: ermintrude

Problem: In which US state is the Monterey Bay Aquarium?
Answer:
california