Assertion: potassium iodide's iodine | /r/HasProperty | a trace element
Facets:
Source sentences:
text: Iodine is a trace element that is naturally present in some foods, added to others, and available as a dietary supplement.
text: Iodine is a trace mineral which is crucial for the synthesis of thyroid hormone.
text: Iodine is a trace element, which means that it is only needed by the body in very small amounts, and all trace elements are toxic if consumed at too high a dose for too long a period.