Assertion: ballpoint pen | /r/HasProperty | invented
Facets:
Source sentences:
text: When was the ballpoint pen invented?
text: The ballpoint pen is an invention that changed people’s lives.
text: Before the ballpoint pen was invented people usually wrote with pens which were dipped into ink, or fountain pens which were filled with ink.
text: When the ballpoint pen was invented, many people thought they were inferior to use because the user's handwriting was not as good.
text: Before the ballpoint pen was invented people usually wrote with pens which were dipped into ink, or fountain pens which were filled with ink whenever the ink was all used up.
text: When the ballpoint pen was invented, many people thought they were bad things to use because people's handwriting was not so good.