LoadPackage( "RingsForHomalg" );
R := HomalgFieldOfRationalsInDefaultCAS( ) * "x,y,z";
LoadPackage( "Modules" );
P1 := LeftSubmodule( "x*y+y*z+z*x", R );
P2 := LeftSubmodule( "x^2+y,y*z+2", R );
P3 := LeftSubmodule( "x*y-1,y+z", R );
I := Intersect( P1, P2, P3 );
W := 1 * R / I;
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