Assertion: postage stamp | /r/HasProperty | printed in sheet
Facets:
Source sentences:
text: Stamps are most commonly made from paper designed specifically for them, and are printed in sheets, rolls, or small booklets.
text: Stamps that are printed on sheets are generally separated by perforations, though, more recently, with the advent of gummed stamps that do not have to be moistened prior to affixing them, designs can incorporate smooth edges (although a purely decorative perforated edge is often present).