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.
Input: it is an f-type asteroid , which means that it is very dark in colouring -lrb- darker than soot -rrb- with a carbonaceous composition.
Output:
it is an f-type asteroid , which means that it is very dark in coloring -lrb- darker than soot -rrb- with a carbonaceous composition.