Question: Homogentisic acid is found in the what type of Irish tree in Europe?
Sentence (from "Salicylic acid"): In addition to serving as an important active metabolite of aspirin ("acetylsalicylic acid"), which acts in part as a prodrug to salicylic acid, it is probably best known for its use as a key ingredient in topical anti-acne products.
Relevant evidence: No