The following data sets contain the input data that are used in this example:

data arc_data;
   input i j;
   datalines;
4 2
5 2
6 3
7 3
2 1
3 1
;

/* truth table (for XOR) */
data truth_data;
   input A B output;
   datalines;
0 0 0
0 1 1
1 0 1
1 1 0
;