Does this train look white or red?
The train is white.
    src        edge_attr  dst
0     0   to the left of    9
1     1  to the right of    5
2     1  to the right of    3
3     1               of    2
4     3  to the right of    6
5     3  to the right of    8
6     3   to the left of    1
7     3  to the right of    4
8     3   to the left of    5
9     4   on the side of    2
10    4   to the left of    5
11    4   to the left of    3
12    5  to the right of    4
13    5   to the left of    1
14    5  to the right of    3
15    5               on    2
16    6   to the left of    3
17    8   to the left of    3
18    9  to the right of    0