What's the backpack on?
The backpack is on the bench.
    src        edge_attr  dst
0     2          wearing    9
1     2   to the left of    8
2     2          wearing    6
3     2          wearing    3
4     2       sitting on    0
5     2          wearing    5
6     2          wearing    7
7     3   to the left of    8
8     4               of    2
9     5   to the left of    8
10    8               on    0
11    8  to the right of    3
12    8  to the right of    2
13    8  to the right of    9
14    8  to the right of    5
15    9   to the left of    8