instruction:
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.
question:
The feral domestic pigeon is often called the " rock dove " : it is common in many cities .
answer:
The species most commonly referred to as " pigeon " is the species known by scientists as the rock dove , one subspecies of which , the domestic pigeon , is common in many cities as the feral pigeon .

question:
A literary element is a part of books and stories of narrative fiction .
answer:
A literary element , or narrative element , or element of literature is a constituent of all works of narrative fiction a necessary feature of verbal storytelling that can be found in any written or spoken narrative .

question:
A Landmark decision , or Landmark court decision , establishes new precedents that establish a significant new legal principle or concept .
answer:
Landmark court decisions , in present-day common law legal systems , establish precedents that determine a significant new legal principle or concept , or otherwise substantially affect the interpretation of existing law .