Task: Question Answering
Input (English): An agriculturalist predicts that the tomato harvest will be very good this year. Which has the greatest effect on the size of the tomato harvest?  
 (A) the time of day the seeds are planted (B) the amount of fruit picked after dark (C) the type of soil in which the crops are grown (D) the number of times daily that the farmer observes the crop
Output (English): C