TASK DEFINITION: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
PROBLEM: In Norse mythology ( a subset of Germanic mythology ) , Elli ( Old Norse " old age " ) is a personification of old age who , in the " Prose Edda " book " Gylfaginning " , defeats Thor in a wrestling match .

SOLUTION: In the " Prose Edda " book " Gylfaginning " , Elli defeats Thor in a wrestling match .

PROBLEM: In aerobic organisms undergoing respiration , electrons are shuttled to an electron transport chain , and the final electron acceptor is oxygen .

SOLUTION: In aerobic organisms , this final electron acceptor is oxygen .

PROBLEM: He had devoted his enormous energies to the destruction of what Republicans called the Slave Power , that is the efforts of slave owners to take control of the federal government and ensure the survival and expansion of slavery .

SOLUTION:
He had devoted his enormous energies to the destruction of what Republicans called the " Slave Power " .