input with options: Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Canyon formed as a consequence of river erosion. Given the two facts above, what are canyons formed by?
OPTIONS:
- rocks
- rainfall
- rivers
- mechanical force
- calcite
- silt
- water
- gravity
output: rivers

input with options: Fact 1: Infection can cause bodily tissues to swell. Fact 2: An aneurysm is a swelling in a blood vessel. Given the two facts above, what can cause an aneurysm?
OPTIONS:
- smoking
- infection
- bacteria
- viruses
- Pollution
- steroids
- influenza
- rays or beams
output: infection

input with options: Fact 1: Cells are programmed to divide only a set number of times. Fact 2: All ViroMed cells are passaged a limited number of times. Given the two facts above, cells are what to a limited number of divides?
OPTIONS:
- increased
- standardized
- warm-blooded
- critical organs
- forced
- programmed
- white
- fertile
output: programmed

input with options: Fact 1: The surface of a beach is formed by mechanical weathering. Fact 2: Sandy and dusty surfaces get hotter during the day, like beach sand. Given the two facts above, what is a beach formed by?
OPTIONS:
- movement of tectonic plates
- heat change
- mechanical weathering
- By coral exoskeletons
- seasonal changes
- patch reefs
- sedimentation
- Nurseries of the ocean.
output:
mechanical weathering