Assertion: led | /r/MadeOf | lead
Facets:
Source sentences:
text: While LEDs have the advantage over fluorescent lamps, in that they do not contain mercury, they may contain other hazardous metals such as lead and arsenic.
text: LEDs are eco friendly devices since they contain no lead or mercury.
text: While LEDs have the advantage over fluorescent lamps that they do not contain mercury, they may contain other hazardous metals such as lead and arsenic.