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"maxwidth"=>"8","seamark:type"=>"gate","seamark:gate:category"=>"flood_barrage","seamark:gate:clearance_width"=>"8"
"maxwidth"=>"8","wikidata"=>"Q17444089","seamark:type"=>"gate","seamark:gate:category"=>"flood_barrage","seamark:gate:clearance_width"=>"8"