What's the difference between Spiders and insects?
Even though both spiders and insects are exoskeletons, Spiders are not insects. Spiders have eight legs, and all insects have six legs.
Instruction: What's the difference between Spiders and insects?
Context: 
Response: Even though both spiders and insects are exoskeletons, Spiders are not insects. Spiders have eight legs, and all insects have six legs.