Task: Question Answering
Input (English): Oak trees produce seeds that are contained in acorns. Blue jays eat the seeds in acorns. Blue jays also collect acorns and hide them in the ground, often far away from the parent oak tree. Blue jays do not eat the seed of every acorn they hide. How do oak trees benefit from blue jays' collecting and hiding acorns?  
 (A) The oak trees are pollinated by the blue jays. (B) The oak trees are protected from other herbivores. (C) The seeds of oak trees are protected from the sun. (D) The seeds of oak trees are planted in new environments.
Output (English): D