What type of vehicle is the same color as the sky the power lines are in?
The train is the same color as the sky.
    src        edge_attr  dst
0     0   on the side of   13
1     1  to the right of   18
2     1   on the side of   13
3     1  to the right of    8
4     1  to the right of   15
5     2  on the front of   13
6     2  to the right of    8
7     2   to the left of    9
8     3   to the left of   18
9     3   to the left of   12
10    3   to the left of    5
11    4   to the left of   13
12    4   to the left of   18
13    5   to the left of   18
14    5  to the right of    3
15    5   to the left of   13
16    6               on    8
17    8   to the left of    1
18    8   to the left of   17
19    8   to the left of   13
20    8   to the left of    2
21    8   to the left of   15
22    8   to the left of   10
23    9   on the side of   13
24    9  to the right of    2
25   10        on top of   13
26   10  to the right of    8
27   11   to the left of   13
28   11   to the left of   18
29   12   to the left of   13
30   12   to the left of   18
31   12  to the right of    3
32   13            above   14
33   13  to the right of   11
34   13  to the right of   18
35   13  to the right of    4
36   13  to the right of    8
37   13  to the right of    5
38   13  to the right of   12
39   13  to the right of   19
40   14            below   13
41   14            under   13
42   15               of   13
43   15  to the right of    8
44   15   to the left of    1
45   15  to the right of   18
46   17               in    7
47   17  to the right of    8
48   18   to the left of    1
49   18   to the left of   13
50   18  to the right of    4
51   18  to the right of    5
52   18   to the left of   15
53   18  to the right of   12
54   18  to the right of    3
55   18  to the right of   11
56   19   to the left of   13