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