Instructions: 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: the possibility remained that liquid ethane and methane might be found on titan 's poles , where it was expected to be abundant and stable.
Output:
there was a chance that liquid ethane and methane might be found at the poles of the planet titan , and believed to be a large supply that was safe.