claim: Weill Cornell Medicine is a biomedical textbook.
evidence: Sigurður Breiðfjorð -LRB- 4 March 1798 -- 1846 -RRB- was an Icelandic poet .. He learned cooperage for four years in Copenhagen and worked as a cooper in Iceland and Greenland .. cooperage. Cooper ( profession ). He was a prolific and popular traditional poet , known for his rimur cycles .. rimur. rimur. Numa rimur is his best-known work .. rimur. rimur