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<http://webisa.webdatacommons.org/138853315>	<http://www.w3.org/ns/prov#value>	"As an example, information has long been available from a NASDAQ ???Level 2??? data feed to professionals such as stock brokers and professional traders." .
<http://webisa.webdatacommons.org/prov/68872318>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/138853315> .
<http://webisa.webdatacommons.org/138853315>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .