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 terms commoners , common people or the masses refers to ordinary people who are members of neither the nobility nor the priesthood .
The common people , also known as the common man , commoners , or the masses , are the ordinary people in a community or nation who lack any significant social status , especially those who are members of neither royalty , nobility , the clergy , nor any member of the aristocracy .

Seismic waves are divided into two main types of waves , body waves and surface waves .

Among the many types of seismic waves , one can make a broad distinction between " body waves " , which travel through the Earth , and " surface waves " , which travel at the Earth 's surface .