Assertion: red wine's compound | /r/AtLocation | grape skins
Facets:
Source sentences:
text: One theory holds that the culprit is histamine, a compound found in grape skins.
text: Those compounds are found in the grape skins, which are more important to the production of red wine, than white wine.
text: Because many beneficial compounds are found in grape skins, red wine is slightly higher in nutrients.