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.

the vagina is remarkably elastic and stretches to many times its normal diameter during vaginal birth.
the vagina is very stretchy and stretches much larger than its normal size during birth.

the sheppard line currently has fewer users than the other two subway lines , and shorter trains are run.
the sheppard line has fewer users than other two subway lines and shorter trains are run.

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.
pre-emptive priority is when regular work is done until a higher priority job comes in.