(<= (Model-Id $X Machine_Beam_Model_M01) (Machine_Beam_Model_M01 $X)) (<= (Machine_Beam_Unit_Weight $X 25.4) (Machine_Beam_Model_M01 $X)) (<= (Machine_Beam_Section_Modulus $X 24.7) (Machine_Beam_Model_M01 $X)) (<= (Has-Parameter-Slot $X Machine_Beam_Section_Modulus) (Machine_Beam_Model_M01 $X))