What is on the tower?
The statue is on the tower.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    2
2     1  to the right of    5
3     1  to the right of    3
4     2        on top of    4
5     2   to the left of    0
6     2               on    4
7     3  to the right of    6
8     3   to the left of    1
9     4   to the left of    0
10    5  to the right of    6
11    5   to the left of    1
12    6   to the left of    5
13    6   to the left of    3