TASK 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.
PROBLEM: the endpoints where a continental divide meets the coast are not always definite , because the exact border between adjacent bodies of water is usually not clearly defined.

SOLUTION: the endpoints where a continental divide meets the coast are not always definite , because the exact border between adjacent bodies of water is usually not understand defined.

PROBLEM: a material such as gold , which is chemically inert at normal scales , can serve as a potent chemical catalyst at nanoscales.

SOLUTION: gold does n't react with other chemicals unless it is used in very , very tiny amounts.

PROBLEM: until 1943 , von dem bach-zalewski remained the hsspf in command of " anti-partisan " units on the central front , a special command created by adolf hitler.

SOLUTION:
until 1943 , von dem bach-zalewski was still the hsspf in charge of " anti-partisan " units on the central front , a special command started by adolf hitler.