x1	x2	x3	y
-1	-1	1	11.54
-1	1	-1	5.45
-1	1	1	7.34
1	-1	-1	17.21
1	-1	1	17.87
1	1	-1	9.40
1	1	1	11.30
0	0	0	11.57
0	0	0	11.97
0	0	0	11.89
0	0	0	12.15