Is the train both yellow and long?
No, the train is long but gray.
    src        edge_attr  dst
0     1           behind   12
1     1   to the left of    7
2     1   to the left of    4
3     1   to the left of   12
4     2   to the left of    9
5     3  to the right of    4
6     3  to the right of    7
7     4   to the left of    7
8     4   to the left of    3
9     4               in    5
10    4  to the right of    1
11    7  to the right of    1
12    7  to the right of    4
13    7   to the left of    3
14    9               of   12
15    9  to the right of    2
16   10   to the left of   12
17   12  to the right of   10
18   12  to the right of    1
19   12      in front of    1