Use reasoning to lead to the answer of the following question:
John and Joe like planning games but Joe was hit by a ball and fell down. What might have happened to Joe.\nOptions:\n- anger\n- good natured ribbing.\n- enjoying\n- injury\n- enjoyment
 Reasoning process:
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When one is hit by ball, it hurts them and they are injured. Injury can lead to one falling down. Therefore, the final answer is injury.
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