Assertion: sextant's side | /r/CapableOf | wear into soft metal of the shade
Facets:
value: over time
type: TEMPORAL
Source sentences:
text: Close inspection of Figure 9 shows that over time the convex side of the washer wears into the soft metal of the shade, resulting in loss of friction and a very annoying tendency for the shades to flop downwards out of position.