Assertion: ballpoint pen's invention | /r/HasProperty | invented in private sector
Facets:
Source sentences:
text: Like Tang and Velcro (often incorrectly credited with having been invented by NASA, see: The Invention of Tang and The Accidental Invention of Velcro), the “space pen” was invented in the private sector and was simply popularized by NASA.
text: Like Tang and Velcro (often incorrectly credited with having been invented by NASA, see: The Invention of Tang and The Accidental Invention of Velcro), the “space pen” was invented in the private sector and was simply popularized by NASA.