What kind of vehicle is the same color as the sky?
The train is the same color as the sky.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of   12
2     0  to the right of    8
3     1  to the right of   13
4     2  to the right of   13
..  ...              ...  ...
71   16   to the left of   13
72   16   to the left of    7
73   16   to the left of   12
74   16   to the left of    9
75   16   to the left of   11

[76 rows x 3 columns]