Assertion: spinach's acid | /r/HasProperty | organic compound
Facets:
Source sentences:
text: The consumption of spinach should be limited, because it contains fairly high levels of oxalic acid, an organic compound that may cause calcium deficiency or kidney stones in large doses.
text: Did you know that raw spinach contains oxalic acid, an organic substance that can interfere with the absorption of essential nutrients like calcium and iron?