Complex sentence: The LXIII Legislature of the Mexican Congress is made up of senators and deputies members of their respective chambers, and began his duties on September 1,2015 to conclude on August 31,2018.
Split into simpler sentences: The LXIII Legislature of the Mexican Congress is made up of senators and deputies that are members of their respective chambers. It convened on September 1,2015 and will conclude on August 31,2018.