Assertion: letter bomb | /r/HasProperty | rare
Facets:
value: extremely
type: DEGREE
Source sentences:
text: Although bombs may be concealed in an incredible variety of containers—from fire extinguishers to pens and letters—most bombs are of the simple pipe bomb form that is concealed in an ordinary-looking bag or some everyday object.14, § Letter bombs are extremely rare, though they receive considerable media coverage.‡