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<http://webisa.webdatacommons.org/267639948>	<http://www.w3.org/ns/prov#value>	"Willbros Group (NYSE:WG[10]) gets a higher grade this week, advancing from a C last week to a B. Willbros Group provides engineering and construction services to the oil, gas, refinery, petrochemical and power industries with a focus on infrastructure such as oil and gas pipeline systems, electric transmission and distribution services and refinery downstream markets." .
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<http://webisa.webdatacommons.org/267639948>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<investorplace.com> .
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