What vehicle is on the street?
The vehicle is a carriage.
    src        edge_attr  dst
0     3  to the right of    4
1     3  to the right of   12
2     3        riding in    5
3     3   to the left of    6
4     4       sitting in    5
5     4   to the left of    6
6     4   to the left of    3
7     5      in front of    8
8     5               on    2
9     5        pulled by    9
10    5   to the left of    7
11    6  to the right of   12
12    6        riding in    5
13    6               in    5
14    6  to the right of    3
15    6  to the right of    4
16    7  to the right of   13
17    7  to the right of    5
18    8  to the right of   10
19    8           behind    5
20    9               on    2
21    9          pulling    5
22    9   to the left of   11
23   10   to the left of    8
24   10   to the left of   12
25   11  to the right of    9
26   12  to the right of   10
27   12   to the left of    3
28   12   to the left of    6
29   13               on    1
30   13   to the left of    7