| http://www.w3.org/ns/prov#value | - 'Gross Income: The value proceeding or accruing from the sale of tangible property or service, and receipts (including all sums earned or charged, whether received or not) by reason of the investment of capital in the business engaged in, including rentals, royalties, fees or other emoluments, however designated (excluding receipts or proceeds from the use or sale of real property or any interest
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