Is the locomotive to the left of the other locomotive gray or orange?
The train engine is orange.
    src        edge_attr  dst
0     1  to the right of    2
1     2   to the left of    1
2     5  to the right of    9
3     5  to the right of   20
4     5   to the left of   13
5     7  to the right of   14
6     8   to the left of   13
7     8   to the left of   18
8     9   to the left of    5
9     9   to the left of   16
10    9   to the left of   13
11   10  to the right of   11
12   10  to the right of   13
13   11   to the left of   19
14   11  to the right of   14
15   11   to the left of   17
16   11   to the left of   10
17   12   to the left of   14
18   12   to the left of   15
19   12   to the left of   13
20   13  to the right of   20
21   13   to the left of   17
22   13   to the left of   19
23   13  to the right of   15
24   13  to the right of   16
25   13  to the right of   12
26   13  to the right of    8
27   13  to the right of    5
28   13  to the right of    9
29   13   to the left of   10
30   14  to the right of   15
31   14   to the left of   11
32   14   to the left of    7
33   14  to the right of   12
34   15   to the left of   14
35   15   to the left of   13
36   15  to the right of   12
37   16  to the right of   20
38   16  to the right of    9
39   16   to the left of   13
40   17  to the right of   13
41   17  to the right of   11
42   18  to the right of    8
43   19  to the right of   13
44   19  to the right of   11
45   20   to the left of   16
46   20   to the left of    5
47   20   to the left of   13