Is there a truck or a train in this picture?
Yes, there is a train.
    src        edge_attr  dst
0     0            below    7
1     1           behind   10
2     1  to the right of    7
3     2  to the right of    6
4     2        on top of    7
5     3  to the right of    4
6     3  to the right of    8
7     3               on    7
8     3   hanging out of    7
9     4   to the left of    3
10    5        on top of    6
11    6   to the left of    2
12    7   to the left of   10
13    7   to the left of    1
14    8   to the left of    3
15    8   to the left of   12
16   10      in front of    1
17   10  to the right of    7
18   12  to the right of    8