Given the task definition and input, reply with output. 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.

history and mandate the drug enforcement administration was established on 1 july 1973 , by reorganization plan no. 2 of 1973 , signed by president richard nixon on 28 march 1973.
the drug enforcement administration was established on july 1 1973 by reorganization plan no. 2 of 1973 signed by president richard nixon on march 28 1973.