Other circumstances.
(3) Other circumstances. Gross income from extraction or the sale or exchange of assets described in section 907(c)(1)(B) includes income from any arrangement, or a combination of arrangements or transactions, to the extent the income is in substance attributable to the extraction of minerals or such a sale or exchange. For instance, a person may have gross income from such a sale or exchange if the person purchased minerals from a foreign government at a discount and the discount reflects an arm's-length amount in consideration for the government's nationalization of assets that person owned and used in the extraction of minerals.