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: a mutant is a type of fictional character that appears in comic books published by marvel comics.

SOLUTION: mutants are fictional characters that appear in marvel comic books.

PROBLEM: manchester became the first city in the uk to acquire a modern light rail tram system when the manchester metrolink opened in 1992.

SOLUTION: manchester became the initial city in the uk to acquire a present light rail tram system when the manchester metrolink opened in 1992.

PROBLEM: it is located on an old portage trail which led west through the mountains to unalakleet.

SOLUTION:
it is located on the trail going west through the mountains to unalakleet.