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.

Q: extinction non-avian dinosaurs suddenly became extinct approximately 65 million years ago.

A: non-flying dinosaurs suddenly became extinct around 65 million years ago.
****
Q: in 2006 , phil downing left the band , citing communication problems with other members.

A: phil downing left the band in 2006 because he had difficulties talking to the other people in the band.
****
Q: from 1978 until 2000 it was an independent municipality.

A:
it was an independent city from 1978 to 2000.
****