Assertion: soldering iron's tip | /r/HasProperty | black
Facets:
value: on all sides
type: LOCATION
value: on one side
type: MANNER
Source sentences:
text: After the iron heats up, the tip appears black (sometimes on all sides and sometimes on one side), then either it doesn't melt the solder at all, or it I fiddle around with it for a while; it melts the solder, but the solder rolls into itself into a ball and doesn't stick to the tip.