What vehicle is to the right of the vehicle the person is in?
The vehicle is a carriage.
    src          edge_attr  dst
0     0                 in    3
1     0     to the left of    4
2     1    to the right of    4
3     1  sitting on top of   12
4     3     to the left of    7
5     3     to the left of    9
6     3     to the left of    4
7     3     to the left of    6
8     4     to the left of    6
9     4     to the left of    9
10    4    to the right of   10
11    4    to the right of    0
12    4    to the right of   11
13    4    to the right of    5
14    4     to the left of    7
15    4    to the right of    3
16    4     to the left of    1
17    5     to the left of    4
18    5     to the left of   11
19    5     to the left of    9
20    5     to the left of    7
21    6    to the right of   11
22    6    to the right of    4
23    6    to the right of   10
24    6    to the right of    3
25    7     to the left of    8
26    7    to the right of    3
27    7    to the right of    4
28    7    to the right of   11
29    7    to the right of    5
30    7    to the right of   10
31    8    to the right of    7
32    8    to the right of    9
33    9    to the right of    4
34    9    to the right of    3
35    9     to the left of    8
36    9    to the right of   10
37    9    to the right of    5
38    9    to the right of   11
39   10     to the left of    7
40   10     to the left of    6
41   10     to the left of    9
42   10     to the left of    4
43   11     to the left of    4
44   11     to the left of    9
45   11    to the right of    5
46   11     to the left of    6
47   11     to the left of    7