In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Input: Consider Input: Sentence: Air pollution causes acid rain, ozone depletion, and global warming. Question: What causes acid rain, ozone depletion, and global warming?

Output: air pollution


Input: Consider Input: Sentence: A neutron collides with an atom of u-235 during the basic nuclear fission process. Question: What type of particle collides with an atom of u-235 during the basic nuclear fission process?

Output: a neutron


Input: Consider Input: Sentence: Satellites are man-made devices in space that are used to observe the earth's surface. Question: What man-made devices in space are used to observe the earth's surface?


Output: satellites