Assertion: carbonated water | /r/MadeOf | 0.04 mg iron
Facets:
Source sentences:
text: Club soda (12 oz.) contains 18 mg calcium, 4 mg magnesium, 7 mg potassium, 0.04 mg iron, 75 mg sodium, 0.35 mg zinc, 0.021 mg copper, and 0.0004 mg manganese.