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: A reverse transcriptase ( RT ) is an enzyme used to generate complementary DNA ( cDNA ) from an RNA template , a process termed " reverse transcription " .

SOLUTION: A reverse transcriptase is an enzyme which works ' backwards ' from RNA to DNA .

PROBLEM: The Historical Dictionary of Switzerland is an encyclopedia on the history of Switzerland that aims to take into account the results of modern historical research in a manner accessible to a broader audience .

SOLUTION:
The Historical Dictionary of Switzerland is an encyclopedia on the history of Switzerland .