Assertion: pen | /r/HasProperty | dipped in ink
Facets:
Source sentences:
text: While both the quill and steel pens had to be dipped in ink, the fountain pen was the first to hold its own ink within a self-contained reservoir.
text: The button works similarly to the lever; pressing the button causes the sac to deflate, and releasing the button causes the sac to reinflate after the pen has been dipped in ink.