PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
1820196-3	1991	Human EPO is characterized by its large carbohydrate chains, which occupy close to 40% of its total mass.	Carbohydrates	40-52	erythropoietin	Homo sapiens	6-9