| http://www.w3.org/ns/prov#value | - WRR is excused from performance if performance is rendered impractical by any accident; war, delay, interruption in or failure of sources or Subcontractors to supply materials and equipment, labor or transportation problem; act of God, or other causes and conditions that are beyond WRR?s reasonable control, or any governmental orders, contracts, priorities directives, requisitions or requests, whe
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