What is the vase before?
The vase is in front of the trees.
    src        edge_attr  dst
0     0   to the left of    1
1     1  to the right of    0
2     4  to the right of    8
3     4  to the right of   10
4     5  to the right of    9
5     6   to the left of    8
6     6  to the right of   10
7     8   to the left of    4
8     8  to the right of   10
9     8           behind   10
10    8  to the right of    6
11    9   to the left of    5
12   10   to the left of    8
13   10   to the left of    4
14   10      in front of    8
15   10   to the left of    6