Which type of vehicle is that, a bus or a train?
This is a bus.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    2
2     0               of   12
3     0   to the left of    9
4     2   to the left of    0
5     2   to the left of    6
6     2               of   12
7     2   to the left of    9
8     2   to the left of    8
9     4  to the right of   10
10    4   to the left of   15
11    5  to the right of   10
12    5   to the left of   15
13    5             near   16
14    6               in    0
15    6               of   12
16    6  to the right of    2
17    6               on   12
18    6   to the left of    9
19    7   to the left of    0
20    8   to the left of    9
21    8  to the right of    2
22    9  to the right of    2
23    9  to the right of    0
24    9  to the right of    8
25    9  to the right of    6
26   10   to the left of    5
27   10   to the left of    4
28   15  to the right of    4
29   15  to the right of    5
30   16             near    5