_:vb50780142	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50780141 .
_:vb50780141	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/aml/amount> .
_:vb50780143	<http://www.w3.org/ns/r2rml#column>	"amount" .
_:vb50780143	<http://www.w3.org/ns/r2rml#datatype>	<http://www.w3.org/2001/XMLSchema#double> .
_:vb50780142	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50780143 .