What type of vehicle is this, a train or a truck?
This is a train.
    src        edge_attr  dst
0     0  to the right of   11
1     1   to the left of    8
2     2  to the right of    5
3     2            above    8
4     3   to the left of    6
5     4   to the left of   10
6     5  to the right of    9
7     5   to the left of    2
8     6             near    7
9     6  to the right of    3
10    6  to the right of   10
11    6  to the right of    7
12    7             near    6
13    7   to the left of    6
14    8               at    1
15    8  to the right of    1
16    9   to the left of    5
17   10   to the left of    6
18   10  to the right of    4
19   11   to the left of    0