Assertion: hollow eraser | /r/HasProperty | invented by j. b. blair of philadelphia
Facets:
value: in 1867
type: TEMPORAL
Source sentences:
text: In 1867, a hollow eraser, into which a pencil could be inserted, was invented by J. B. Blair of Philadelphia.
text: In 1867, a hollow eraser, into which a pencil could be inserted, was invented by J. B. Blair of Philadelphia.
text: In 1867, a hollow eraser, into which a pencil could be inserted, was invented by J. B. Blair of Philadelphia.
text: In 1867, a hollow eraser, into which a pencil could be inserted, was invented by J. B. Blair of Philadelphia.