What color is the vehicle that is not short?
The train is silver.
    src        edge_attr  dst
0     0  to the right of   13
1     1  to the right of    4
2     1  to the right of    2
3     2   to the left of    1
4     2  on the front of    4
5     3   on the side of    4
6     4   to the left of    1
7     4   to the left of    5
8     5               by    4
9     5  to the right of    6
10    5  to the right of    4
11    6   to the left of    5
12    7               in    9
13    7  to the right of   13
14    9   to the left of   14
15   13   to the left of    0
16   13   to the left of    7
17   14  to the right of    9