What is in the window?
The flowers are in the window.
    src        edge_attr  dst
0     0   to the left of    1
1     0  to the right of    5
2     1  to the right of    2
3     1  to the right of    0
4     1  to the right of    6
5     2   to the left of    1
6     5               in    6
7     5   to the left of    0
8     5   to the left of    7
9     6   to the left of    1
10    7  to the right of    5