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



Ambiguous triples (i.e. list of triples for which there is ambiguous data about whether they are colliders or not):
<X12, X4, X19>
<X10, X18, X14>
<X12, X14, X18>
<X18, X14, X1>
<X14, X18, X17>