{"@context":"https://schema.org","@type":"Class","@id":"https://schema.org/Vein","rdfs:label":"Vein","rdfs:comment":"A type of blood vessel that specifically carries blood to the heart.","rdfs:subClassOf":[{"@id":"https://schema.org/Vessel"}],"schema:properties":["drainsTo","regionDrained","tributary"],"schema:subTypes":[]}