Simplify the expression. (Assume that r, s, and t are positive.) 
Definitions:
Informative Report
A report that provides information.
Encroached Land
Land that is illegally occupied or used by someone else without the owner's permission.
Talking Heads
Headings that are detailed enough to provide an overview of the material in the sections they introduce.
Non-Parallel
Lacking uniformity or consistency in structure, direction, or comparison between different elements or aspects.
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