Task: Paraphrasing
Input (English): Question: Which factor is most likely to cause the number of rabbits living in an area to increase? 
Answer: fewer predators. 
Sentence: A fewer predators is most likely to cause the number of rabbits living in an area to increase.
Output (English): An increase in the number of rabbits living in an area is most likely caused by a decrease in number of predators predating on them in that area.