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.

Portland stone is hard enough to resist weathering but soft enough to be worked ( cut and carved ) by stonemasons .
The degree of cementation in Portland stone is such that the stone is sufficiently well cemented to allow it to resist weathering , but not so well cemented that it ca n't be readily worked ( cut and carved ) by masons .

The Hondo and the Sarstoon River make the northern and southern border .
The undulating courses of two rivers , the Hondo and the Sarstoon River , define much of the course of the country 's northern and southern boundaries .

A trademark can be a name , word , phrase , symbol , logo , design , or picture .

A trademark may be designated by the following symbols : A trademark is typically a name , word , phrase , logo , symbol , design , image , or a combination of these elements .

