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: some define the hadopelagic as waters below 6,000 m -lrb- 19,685 ft -rrb- , whether in a trench or not.

SOLUTION: some define the hadopelagic as waters below 6,000 m -lrb- 19,685 ft -rrb- , whether it is in a moat or n.

PROBLEM: due to its appearance at burial sites across the globe , the spiral most likely represented the " life-death-rebirth " cycle.

SOLUTION: in appearance at burial sites across the globe , the spiral probably represented the " life-death-rebirth " cycle.

PROBLEM: blood vessels and nerves enter the glands at the hilum and gradually branch out into the lobules.

SOLUTION:
blood vessels and nerves go into the glands at the hilum and slowly branch out into the lobules.