instruction:
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.
question:
geography the caucasus mountains are generally perceived to be a dividing line between asia and europe , and territories in caucasia are alternately considered to be in one or both continents.
answer:
the caucasus mountains are generally perceived to be a dividing line between asia and europe.

question:
a historian has stated that " it was quinine 's efficacy that gave colonists fresh opportunities to swarm into the gold coast , nigeria and other parts of west africa ".
answer:
a historian said , " it was quinine 's efficacy that gave colonists fresh opportunities to swarm into the gold coast , nigeria , and other parts of west africa ..

question:
the word cereal derives from ceres , the name of the roman goddess of harvest and agriculture.
answer:
the word " cereal " comes from " ceres " , the name of the roman goddess of harvest and agriculture.