Definition: In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.
Input: atlantic hurricane seasons pre-1600 1600s / 10s 1620s / 30s observation data for years before 1492 is completely unavailable because record keeping was virtually non-existent in the pre-columbian era , and any records that may have once existed have long since been lost.
Output:
atlantic hurricane seasons of pre 1600 , 1600s , 1610s , 1620s and 1630s . observation data for years before 1492 is completely not accessible because record keeping was practically absent in the pre-columbian era . any such records that may have once present have long since been lost.