| http://www.w3.org/ns/prov#value | - PRLog - Feb. 15, 2012 - Already several months lasting situation of unfavorable weather have been interrupting the flow of important commodities including grains, minerals, coal and petroleum products such as heating oil via the Rhine and Danube's shipping routes.The period of shallow water caused by a dry spell in Germany and Switzerland influenced the maximum capacity of vessels allowed to sail
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