In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Example: The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Example solution: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
Example explanation: The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".

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

Solution: 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 .