In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

The Italian National Institute of Statistics ( Italian : Istituto Nazionale di Statistica ; Istat ) is the main producer of official statistics in Italy .
Istituto Nazionale di Statistica is the national statistical institute of Italy .

Each individual sheet of paper is folded into a module , or unit , and then modules are assembled into an integrated flat shape or three-dimensional structure by inserting flaps into pockets created by the folding process .
Many sheets of paper are folded in identical shapes , and they are then put together by inserting flaps into pockets .

Planetary geology includes such topics as determining the internal structure of the terrestrial planets , and also looks at planetary volcanism and surface processes such as impact craters , fluvial and aeolian processes .

Some of these include the inner structure of the terrestrial planets , volcanism on planets , craters , fluvial and aeolian processes .