Assertion: enamel | /r/HasProperty | calcium phosphate
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Source sentences:
text: Still others argue that tooth enamel is, "calcium phosphate" (I agree) while other experts say enamel is, "composed of approximately 28% organic matter and 72% inorganic (calcium)", which is a vague but some-what true response although I have to plead ignorance on the actual percentages of calcium phosphate in the enamel.