On which side is the red truck?
The truck is on the left of the image.
    src        edge_attr  dst
0     3   to the left of    5
1     3   to the left of    9
2     4             near   11
3     5  to the right of    3
4     5  to the right of    9
5     6   to the left of   12
6     8  to the right of   11
7     9  to the right of    3
8     9   to the left of    5
9    11   to the left of    8
10   11          next to    4
11   12  to the right of    6