| http://www.w3.org/ns/prov#value | - We used real data attained from about 30% of the business we surveyed and industry standards to develop the estimates,??? said David Parham, Senior Vice President, Delta Associates. ???We think these numbers are a fraction of the total impact that the Partnership has had on the District of Columbia???s economy, and it does not measure things such as change in perception or indirect and tangential
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