Task: Question Answering
Input (English): Mangrove trees are an important wetland inhabitant. Which is an example of a limiting factor in mangrove wetlands that is unrelated to the density of the mangrove wetland?  
 (A) amount of tannin in the bark (B) severity of hurricanes per season (C) number of days of sunlight per year (D) size of stilt- like root systems per tree
Output (English): B