Assertion: purine | /r/HasProperty | substance
Facets:
Source sentences:
text: Purine is a substance that is found in foods and is produced naturally by the body.
text: Purine is a substance found naturally in food and is also naturally produced by the body.
text: Uric acid is a byproduct of purines, which is a substance naturally found in your body and in some of the foods you eat.