PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 34209933-2 2021 The Napa soil of Tanah Datar district, West Sumatra, Indonesia is a natural material which contains SiO2 and Al2O3 as its major components. Aluminum Oxide 109-114 NSF attachment protein alpha Homo sapiens 4-8