input with options: Q: Mammals are synapsids, meaning they have a single opening in what structure? A:
OPTIONS:
- spine
- heart
- hip
- skull
output: skull

input with options: Q: The ostwald process is the commercial method for producing what? A:
OPTIONS:
- citric acid
- deoxyribonucleic acid
- chlorine
- nitric acid
output: nitric acid

input with options: Q: Earth is the only planet in the solar system that has what element, which is essential for human life, present in all three of its states? A:
OPTIONS:
- helium
- oxygen
- carbon
- water
output: water

input with options: Q: What group of gases are unusually unreactive? A:
OPTIONS:
- volcanic gases
- greenhouse gases
- halogens
- noble gases
output:
noble gases