input with options: You are presented with the quiz "what is natural?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aging is associated with the death of cells" and "cell death is natural". So, what's the best answer to the question?
OPTIONS:
- Spruce
- artificial sweetener
- aging
- wetland
- fake purses
- wind
- imitation crab
- Light
output: aging

input with options: You are presented with the quiz "The pull of what on the Earth's oceans cause the tides?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "the gravitational pull of the Moon on Earth 's oceans causes the tides" and "planetary moons are natural satellites". So, what's the best answer to the question?
OPTIONS:
- A yellow star
- Time and energy
- energy of moving objects
- A natural satellite
- flow of electrons
- An artificial satellite
- A red star
- hydrogen and oxygen
output: A natural satellite

input with options: You are presented with the quiz "Pipes can burst because at low temperatures, water does what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "when water freezes , that water expands" and "water pipes can freeze and burst". So, what's the best answer to the question?
OPTIONS:
- break off
- moves
- expand
- evaporate
- squeeze
- flooding
- boil
- shrink
output: expand

input with options: You are presented with the quiz "what may compete for territory, water, food, or mates?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "animals may compete for territory, water, food, or mates" and "pigs are very intelligent animals". So, what's the best answer to the question?
OPTIONS:
- humans
- pigs
- Birds
- density
- gravity
- clouds
- bears
- koalas
output:
pigs