Assertion: ballpoint pen | /r/CapableOf | use oil-based ink
Facets:
Source sentences:
text: Ballpoint pens use oil-based ink, and writing is lighter and more deliberate.
text: Ballpoint pens, on the other hand, use oil-based inks which dry instantly and remain permanently on the page once applied.
text: The more economical and available Ballpoint pen uses oil-based ink, while the rollerball variant employs the water-based liquid or gel ink.