Are the shoes on top of the bench that is not full?
Yes, the shoes are on top of the bench.
    src        edge_attr  dst
0     0  to the right of   10
1     4  to the right of   10
2     4  to the right of    8
3     5  to the right of   10
4     6               on    5
5     6        on top of    5
6     7  to the right of   10
7     8               on   10
8     8   to the left of    4
9    10   to the left of    5
10   10   to the left of    7
11   10   to the left of    0
12   10   to the left of    4