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

SOLUTION: non-flying dinosaurs suddenly became extinct around 65 million years ago.

PROBLEM: the town is mostly constituted of mud houses and small canals that supply water.

SOLUTION: the town is mostly made up of mud houses and small canals that provide water.

PROBLEM: history u.s. president woodrow wilson first proclaimed an armistice day for november 12 , 1919.

SOLUTION:
. history u.s. president woodrow wilson first proclaimed an armistice day for november 12 , 1919.