Assertion: bookshelf's shelf | /r/HasProperty | covered with cowhide
Facets:
Source sentences:
text: In the great public libraries of the twentieth century, multilevel stacks often served as both structure and shelving, of iron, as in the British Museum where the shelves are covered with cowhide; or steel, as in the Library of Congress in Washington, D.C.; or of slate, as in the Fitzwilliam Library at Cambridge.