PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8822186-4 1995 Naloxone, an opioid antagonist, and neostigmine, an acetylcholinesterase inhibitor, are thought to restore motility of the large colon in cases of large colon impaction in the horse. Neostigmine 36-47 acetylcholinesterase Equus caballus 52-72