Which kind of vehicle is to the right of the container?
The vehicle is a bus.
    src        edge_attr  dst
0     1  to the right of    5
1     1   to the left of    2
2     2  to the right of    5
3     2  to the right of    8
4     2   to the left of    6
5     2  to the right of   15
6     2  to the right of    1
7     2   to the left of    4
8     3   to the left of    7
9     3   to the left of    6
10    3  to the right of   15
11    3   to the left of    4
12    3  to the right of    5
13    4  to the right of   15
14    4  to the right of    3
15    4  to the right of    2
16    4  to the right of    7
17    4  to the right of    5
18    5   to the left of   15
19    5   to the left of   10
20    5   to the left of    3
21    5   to the left of    2
22    5   to the left of    1
23    5   to the left of    4
24    5   to the left of    7
25    5   to the left of    6
26    5   to the left of    8
27    6  to the right of    3
28    6  to the right of    5
29    6  to the right of    2
30    6  to the right of    7
31    6  to the right of   15
32    7   to the left of    4
33    7  to the right of    5
34    7   to the left of    6
35    7  to the right of   15
36    7  to the right of    3
37    8  to the right of   11
38    8   to the left of    2
39    8  to the right of    5
40    8   to the left of    9
41    8             with    1
42    8               by   10
43    9  to the right of    8
44   10  to the right of   11
45   10   to the left of   12
46   10   to the left of   14
47   10  to the right of    5
48   10               on    9
49   11   to the left of    8
50   11   to the left of   10
51   12  to the right of   10
52   14               of   12
53   14  to the right of   10
54   15   to the left of    6
55   15   to the left of    7
56   15   to the left of    2
57   15   to the left of    4
58   15   to the left of    3
59   15  to the right of    5