Assertion: fountain pen's reservoir | /r/AtLocation | bottom
Facets:
Source sentences:
text: Whereas the fountain pen should work even when the nib is on top and the reservoir is at bottom, because the tongue under the nib suck the ink by siphon method from the reservoir.
text: Ink keeps getting supplied to the ball point depending on the quality of the ink and it will not work when the ball point is on top and the reservoir is at the bottom.