What is hanging on the hedge?
The clock is hanging on the hedge.
    src        edge_attr  dst
0     0  to the right of   18
1     2       hanging on   11
2     2  to the right of   18
3     3   to the left of   17
4     3   to the left of   15
5     3   to the left of    5
6     3   to the left of    4
7     3   to the left of   10
8     3   to the left of    8
9     4  to the right of    3
10    5  to the right of   17
11    5  to the right of    3
12    5   to the left of    8
13    8  to the right of   17
14    8  to the right of    3
15    8  to the right of    5
16   10      standing in   15
17   10  to the right of   17
18   10  to the right of    3
19   13  to the right of   18
20   15  to the right of    3
21   17   to the left of    5
22   17   to the left of   10
23   17   to the left of    8
24   17    growing along   15
25   17  to the right of    3
26   18   to the left of    2
27   18   to the left of    0
28   18   to the left of   13
29   18       growing on    3