Graph Nodes:
X1;X2;X3;X4;X5;X6;X7;X8;X9;X10;X11;X12;X13;X14;X15;X16;X17;X18;X19;X20

Graph Edges:
1. X1 --- X11
2. X1 --> X20
3. X10 --> X13
4. X11 --- X15
5. X11 --> X17
6. X11 --- X19
7. X11 --> X20
8. X12 --- X14
9. X15 --> X13
10. X15 --- X16
11. X15 --- X19
12. X18 --> X13
13. X19 --> X13
14. X2 --> X13
15. X2 --> X17
16. X2 --> X20
17. X2 --- X6
18. X3 --> X17
19. X3 --- X6
20. X4 --> X20
21. X4 --> X9
22. X5 --- X12
23. X6 --> X13
24. X6 --> X17
25. X6 --- X19
26. X6 --> X9
27. X7 --- X15
28. X7 --> X18
29. X7 --> X20
30. X8 --> X17
31. X8 --> X18



Ambiguous triples (i.e. list of triples for which there is ambiguous data about whether they are colliders or not):
<X6, X19, X15>
<X2, X6, X3>
<X1, X11, X15>
<X6, X19, X11>
<X7, X15, X11>
<X5, X12, X14>
<X19, X6, X3>