_:vb50780144	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/aml/transactionDate> .
_:vb50780145	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50780144 .
_:vb50780146	<http://www.w3.org/ns/r2rml#datatype>	<http://www.w3.org/2001/XMLSchema#date> .
_:vb50780145	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50780146 .
_:vb50780146	<http://www.w3.org/ns/r2rml#column>	"tx_date" .