Is the van behind a bus?
No, the van is behind a fence.
    src        edge_attr  dst
0     0   to the left of    8
1     0  to the right of    2
2     1   to the left of    8
3     1  to the right of    2
4     2   to the left of    6
5     2   to the left of    1
6     2   to the left of    0
7     3           behind    9
8     4   to the left of    6
9     5   to the left of    8
10    6  to the right of    2
11    6  to the right of    4
12    7  to the right of    8
13    8  to the right of    0
14    8  to the right of    1
15    8  to the right of   13
16    8   to the left of    7
17    8  to the right of    5
18    9      in front of    3
19   10            above   13
20   11   to the left of   13
21   13  to the right of   11
22   13   to the left of    8
23   13  to the right of   14
24   13            below   10
25   14   to the left of   13