What vehicle is it?
The vehicle is a train.
    src        edge_attr  dst
0     1  to the right of   10
1     2             near   10
2     2      in front of   10
3     2   to the left of    4
4     2   to the left of   10
5     4  to the right of    2
6     5   to the left of    9
7     7   to the left of   10
8     9  to the right of    5
9    10           behind    2
10   10  to the right of    2
11   10   to the left of    1
12   10  to the right of    7
13   10             near    2