instruction:
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.
question:
the proportion of c-types may actually be greater than this , because c-types are much darker than most other asteroid types except d-types and others common only at the extreme outer edge of the main belt.
answer:
the portion of c-types may actually be greater than this , because c-types are much darker than most other asteroid types except d-types and others common only at the extreme outer edge of the main belt.

question:
design philosophies two basic designs exist : event-driven -lrb- priority scheduling -rrb- designs switch tasks only when an event of higher priority needs service , called pre-emptive priority.
answer:
pre-emptive priority is when regular work is done until a higher priority job comes in.

question:
the black core of pencils is still referred to as " lead " , even though it never contained the element lead.
answer:
the black core of pencils is still called " lead " , even though it never made of the element lead.