. "P68 foresees use of"@en . "P68"^^ . . . . "Scope note:\nThis property identifies an E57 Material foreseeen to be used by an E29 Design or Procedure.\n\nE29 Designs and procedures commonly foresee the use of particular E57 Materials. The fabrication of adobe bricks, for example, requires straw, clay and water. This property enables this to be documented.\n\nThis property is not intended for the documentation of E57 Materials that were used on a particular occasion when an instance of E29 Design or Procedure was executed.\n\nExamples:\n- procedure for soda glass manufacture (E29) foresees use of soda (E57)\n\nIn First Order Logic:\nP68(x,y) \u2283 E29(x)\nP68(x,y) \u2283 E57(y)\nP68(x,y) \u2283 P67(x,y)"@en . .