Are there either any umbrellas or fences?
Yes, there is an umbrella.
    src        edge_attr  dst
0     1               on    0
1     1   to the left of    2
2     2  to the right of    5
3     2   to the left of    8
4     2   to the left of    7
5     2  to the right of    1
6     2   to the left of    3
7     3  to the right of    7
8     3  to the right of    2
9     3  to the right of    8
10    5   to the left of    8
11    5   to the left of    7
12    5   to the left of    2
13    6  to the right of    7
14    6  to the right of    8
15    7   to the left of    3
16    7  to the right of    2
17    7   to the left of    6
18    7  to the right of    5
19    8               on    7
20    8   to the left of    6
21    8  to the right of    5
22    8   to the left of    3
23    8  to the right of    2