intersection { 
   box{ <-2,0,-2.5>,<2.5, 4.00,2.5> }
   object{ Paraboloid_Y }  
   texture{ pigment{ color rgb<1, 0.5, 0.7> }
            finish { phong 1}
          }
   scale <1,1,1>*0.5 rotate<0,0,0> translate<0,0.00,0.0>
} // end of object --------------------------------------