Task: Question Answering
Input (English): Which relationship is mutualistic?  
 (A) an insect that lives and feeds on the body of an alligator (B) an ant that lives on a plant and defends the plant from other insects (C) a bird that migrates to follow the movements of the butterflies that it eats (D) a deer that eats one kind of plant, which allows another kind of plant to grow in its place
Output (English): B