| http://www.w3.org/ns/prov#value | - PHILADELPHIA ??? The city???s Navy Yard, a massive military powerhouse where battleships were born until the Cold War put it on ice, is celebrating a milestone that seemed a stretch when the Navy shipped out 17 years ago.The nation???s first shipyard ??? its origins date to 1776 ??? the property is now home to 130 companies.???There was a lot of uncertainty early on,??? said John Grady, president
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