Which place is it?
It is a river.
    src        edge_attr  dst
0     1   to the left of   12
1     1  to the right of   14
2     2   to the left of   14
3     2   to the left of    3
4     2  to the right of   10
5     2  to the right of   15
6     3  to the right of    2
7     3  to the right of   14
8     3   to the left of   12
9     5  to the right of    7
10    5    growing along    3
11    5  to the right of   14
12    5    growing along   11
13    6   to the left of    7
14    7   to the left of    5
15    7   to the left of   18
16    7  to the right of   11
17    7  to the right of    6
18   10   to the left of    2
19   10   to the left of   14
20   11   to the left of    7
21   12  to the right of    3
22   12  to the right of    1
23   14   to the left of    5
24   14  to the right of   15
25   14  to the right of   10
26   14  to the right of    2
27   14   to the left of    3
28   14   to the left of    1
29   15   to the left of    2
30   15   to the left of   14
31   18               on   17
32   18  to the right of    7