<http://webisa.webdatacommons.org/prov/429041391> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/410644315> . <http://webisa.webdatacommons.org/410644315> <http://www.w3.org/ns/prov#wasQuotedFrom> <utexas.edu> . <http://webisa.webdatacommons.org/410644315> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/410644315> <http://www.w3.org/ns/prov#value> "As a doctoral student at the University of New Mexico, Breecker began studying the formation of soil carbonates, which are rocks or minerals, such as calcite, found in the ground and dominated by carbon-based ions." .