On which side of the image is the tower?
The tower is on the right of the image.
    src        edge_attr  dst
0     1   to the left of   11
1     1               of    4
2     5   to the left of   15
3     8   to the left of   12
4     8               of    4
5     8   to the left of   11
6     9               of    4
7    11               of    4
8    11  to the right of    1
9    11  to the right of   12
10   11  to the right of    8
11   12               of    4
12   12   to the left of   11
13   12  to the right of    8
14   13  to the right of   14
15   14   on the side of    4
16   14   to the left of   13
17   15  to the right of    5