Task: Question Answering
Input (English): A recent study concluded that about 90% of all large predatory fish such as tuna have disappeared from the world's oceans in the past 50 years. Which of these is most likely the direct cause of this loss?  
 (A) Urban development near the coast (B) Commercial harvesting from the ocean (C) Climate change on Earth (D) Acid precipitation over the oceans
Output (English): B